B15 hi ich habe seit kurzen den Hp49g. wer kann mir helfen wie l.9ase ich aufgaben welche aus 3 gleichungen und 3 unbekannten besteht??? ==== On the HP48 you could supply CHOOSE with a starting position of zero - this would make the CHOOSE-box a view only list. This do not work on the HP49G; Title {1 2 3} 0. CHOOSE works exactly like Title {1 2 3} 1. CHOOSE on the HP49G. It shouldn't. ==== My Question: (scroll down for more context) ------------ http://groups.google.com/groups?lr=&ie=UTF-8&oe=UTF-8&threadm=n8ovauop5hdoq8 6o7h97kc5mi4v8pve1tt%404ax.com&rnum=8 ... discussed methods to replace the SystemOuterLoop by installing a custom procedure in the RAM variable FIRSTPROC (address #80EB0), which replaces the default StartupProc. As I don't speak ML, I looked around and adapted the following code from the sources of Java36a: :: ( Hp49G, masd, ROM 1.18 ) ' ID KKERNEL ROMPTR@ DROP ( This only works in port 0, but not in ports 1 or 2 ) CODE AD0EX ;save D0 D0=80EB0 ;FIRSTPROC addr Hp49G C=DAT1 A ;get addr of ROMPTR D1=D1+ 5 ;point to STK2 D=D+1 A ;pop STK1, incr mem. DAT0=C A ;write addr of ROMPTR ; into FIRSTPROC D0=A ;restore D0 LOOP ENDCODE ; @ After applying CRLIB, ID KKERNEL is the ROMPTR to my patched StartupProc. The above excerpt from $config works fine if the library is in port 0. Can anybody tell me what I have to do to make it work when the lib is in port 2? I suppose there's a problem with switching banks in the FlashRom, but I have no idea how to deal with the issue. Markus Context: -------- I've written an application to use a HP49 as a data-entry terminal for a portable label printer. Since the Hp49 is not gonna be used as a calculator, my ParOuterLoops completely redefine the keyboard. I print the new layout on a heavy paper and wrap the whole device in a self-adhesive foil to fasten the sheet. Interestingly, it's now much easier to type, since you can slide your fingers over the keyboard without having to lift them up for the passage. Furthermore, the keys feel less stiff than the uncovered rubber keys. The redefined layout doesn't use A-F as menu keys. This is no problem as long as my ParOuterLoops are in complete control of the screen. Unfortunately, that's not always the case: 1) TurnOff includes a call to ?FlashAlert, which causes an ugly Low Battery warning that must be acknowledged by F6, Enter or ON. I tried to use DEEPSLEEP in STARTOFF to turn the calc off, but it didn't work: after TOFF, the calc goes to sleep, but after 2 minutes or so, it magically wakes up, just to wait another 2 minutes until it calls STARTOFF again, recursively. This seems to be a rather battery-consuming bug. A forged TurnOff (without the ?FlashAlert) was my solution. When LowBatt? is TRUE on poweron, I provide my own (internationalized) Splash-Screen, which is dismissible with any key. 2) On a warmstart, StartupProc is executed. That guy also has a call to ?FlashAlert, and unfortunately _before_ ID STARTUP is executed. Therefore, I have to patch StartupProc as well, since I don't want case of a warmstart (due to unlikely ;-} internal bugs or extremely low battery conditions). ==== I pulled out my TDS 512K RAM without freeing the memory, and now I can not find the Bank Switching code. Lib 803. into the Calculator. I have the Tripod TDS Manual that shows me how but I don't have the SW. (I thought it stayed on the Card - but they are not there - 803, 804 ...) Don Wichman ==== > 48G: 32Kb > 48G+: 128Kb > 48GX: 128Kb + two eXpansion ports (up to 128Kb in the first, up to 4MB in > the second) That is the misleading advertizing of the HP48.. There's a flaw in the actual memory architecture of the HP48 preventing to use a card bigger than 2MB. Otherwise you will always get a Invalid Card ==== > That is the misleading advertizing of the HP48.. > There's a flaw in the actual memory architecture of the HP48 preventing to > use a card bigger than 2MB. Otherwise you will always get a Invalid Card That's not entirely correct. The HP48GX can acces 31 ports in memory slot 2, which means 3968 kb - a 4 Mb card willl have 32 ports of 128 kb as you know. Port 32, if present, will result in the Invalid Card Data error. Companies like Klotz solve this by making the user able to alternate between the four last ports in pairs with a dipswitch on the card itself. This means you at all time have 3840 kb at your service, and that you at any time can switch the last 256 kb to an alternate portion of 256 kb. With the 128 kb user memory, a 128 kb card in slot 1 and a Klotz 4 Mb card in slot 2, you'll actually have 4 Mb avaviable RAM at any time. ==== you guys could use the hp48 keyboard with a PDA and use the emu48 or emu89/92 at great spped! (or other math software) this is an idea with the sharp zaurus the hardware consist of: a butchered 48 keyboard (well, not a very elegant means) a serial encoder like http://www.semtech.com/pdf/doc5-703-ir20-ds.pdf a small PCB with batteries a foldable leather case so the keyboard with the IR lays on the left. the software: http://killefiz.de/zaurus/showdetail.php?app=817 that's all! no messing around with drivers or software development. is that evolution or what :) > I agree, the TI89 is much better than it is given credit for in this > newsgroup which of course is understandable. Yes, I do own a 49G and love it > too but, at least for me, the software development tools for the 89 are so > outstanding you really can't beat it and the tools relate to flexibility I > can make work. I guess the 49G people who have programmed a lot just might > say the same for the 49...built in this and that, etc. However, if you are a > C/C++ guy like me, its hands down for the 89 and I never owned any calc > other than an HP. In fact, because of the compiler(s) available is the main reason I even > considered the TI but still decided and bought the HP. Then, one day, I > happen to find an 89 for $84 brand new at Office Depot and I asked the > salesman several times is this the correct price? and he stated yes that > is the price so I bought it. Later on his supervisor told him it was in the > wrong bin and he just sold it for less than half price... as I was at the > the TI-89 has, for the 49G I would never have even considered it. If anyone knows of a really good C/C++ development environment for the 49G > PLEASE let me know! Through all my searching I have not found nothing close > to what TI offers even though, albeit a long time ago, HP stated it was > going to have this type of dev. software. No flames...I like 'em both. Just a IMHO, > JF > > Speaking of Hp people... > > You hate this, however you are still reading around. This Hp people > > must be really good... > > Yes the hp people are very good. But I am very good with my 89. > > I do own a 49g (got it when hp offered $75 dollar rebate) but I am > much more comfortable with my ti89. Besides I got my 89 because it > had a 68k processor because I had studied assembly in general and > thought that the 68k processor was rather nice. > > For very complex math I use the student version of MathCAD. Yes it > was purchased. > > -Samuel ==== you guys could use the hp48 keyboard with a PDA and use the emu48 or > emu89/92 at great spped! (or other math software) this is an idea with the sharp zaurus the hardware consist of: a butchered 48 keyboard (well, not a very elegant means) Is that a do it yourself method for having the keyboard of the 48? If so, then how much tinkering is involved? Is it easy for someone who has no idea about electronics? > a serial encoder like http://www.semtech.com/pdf/doc5-703-ir20-ds.pdf Why is that necessary? For data transfer? > a small PCB with batteries > a foldable leather case so the keyboard with the IR lays on the left. Oh, even I can understand these items ;-) > the software: http://killefiz.de/zaurus/showdetail.php?app=817 that's all! no messing around with drivers or software development. is that evolution or what :) Well, Raphael, it depends on the someone's skills. If it becomes too complicated to put all parts together, then it is an option only for people that know how to do such things. But for guys like me it could become a 100 years project ;-) Greetings and thanks for the info, Nick. ==== card) and initially was delighted. Soon, however, I got into a big trouble-vortex with the fonts. When applying FONT6 -> FONT before CLLCD text 1 DISP 7 FREEZE 0 WAIT, etc, CLLCD. I tried all kinds of flags, downloaded Ytrik and mkf flags, to no avail. On the HP49 the txt is FONT6. Even more disappointing, when applying Menu 30.01 (SOLVE ROOT SOLVR) the menu labels still show the old clunky HP CAPITALIZED letters. There must be a way around? ==== > I just read at > HP announced last November that they were back in the calculator > business. Was this announcement made before or after they announced > that they were out of the calculator business? Which is the latest > news? Since HP never announced that they were out of the calculator business, I'd say that the in announcement must be the latest. ==== >I just read at >>HP announced last November that they were back in the calculator >>business. Was this announcement made before or after they announced >>that they were out of the calculator business? Which is the latest >>news? > Since HP never announced that they were out of the calculator business, > I'd say that the in announcement must be the latest. I guess I was confused after reading stuff like http://www.hpcalc.org/goodbyeaco.php I'd like to know just HP means (in the annoucement at handheld.org) by a new range of graphing calculators. - M ==== Today, after a dialog with my distributor (hp calculators) the last news are: Well, at this time there is the possibility to get 49G with english manual, but the price is always the same one. There are also 48G+ in inventory as well as 48GX. With regard to 19BII, aprox. in Julio a new version will come. And in April the new version of 17BII is expected. And a 12C Platinum also comes, for May aprox. As for 49G with Spanish manuals, it is expected that a special production arrives in May. !!** The one that will replace to 49G, aprox will come for August **!! Those are the news and HP continues the production of 10BII, 12C, 30S. Any comments?? JoGa ==== > !!** The one that will replace to 49G, aprox will come for August **!! Those are the news and HP continues the production of 10BII, 12C, 30S. That's good news! Wonder what that will be... -- remove the obvious ==== > !!** The one that will replace to 49G, aprox will come for August **!! Am I reading this right? Does that mean HP is coming out with some like an HP 50? Alex ==== Sounds too good to be true... So I'll belive it when I see it. Then I'll analyze to find out if they're worth considering. -- Thierry Morissette thm47@msn.com Today, after a dialog with my distributor (hp calculators) the last > news are: Well, at this time there is the possibility to get 49G with english > manual, but the price is always the same one. There are also 48G+ in > inventory as well as 48GX. With regard to 19BII, aprox. in Julio a new version will come. And in April the new version of 17BII is expected. And a 12C Platinum also comes, for May aprox. As for 49G with Spanish manuals, it is expected that a special > production arrives in May. !!** The one that will replace to 49G, aprox will come for August **!! Those are the news and HP continues the production of 10BII, 12C, 30S. > Any comments?? JoGa ==== It's scandalous that there is no quality control for these expensive calculators. Are we to expect more of this from the Chinese manufacturers ? It's OK if the 49 is selling for $10 not to have QA, but $150 ?? I don't mind paying top dollar for a reliable, well made calculator, but it seems HP calculator users are getting more and more ripped off as time goes on. It's the same saga with oil tankers breaking apart and crashing into each other because the shipping companies crew their ships with cheap labour and poor skills. Intellectual capital is worth 2c and people will get burned. The outsourcing marketing engineers should get off their lazy buts and make sure people get what they pay for, by enforcing QA at the factory for incoming components as well as what goes out. It's OK for the Chinese to fill the world with cheap disposable toys, eletronics and clothes and other crap, but HP Calculators, that is just INEXCUSABLE. Resellers shouldn't have to do repairs for new products. The blatant greed even ebbs down to speculating HP calc users reselling older calculators to make a profit. People who pay $US300 for a HP32 must be desperate. I sell hp calculators in my city, I had a many calculators with this > problem, but in the last month I learn the problem and open one calc > to try repare this, the only problem is the capacitor, only you will > change this 1000uF 6,3V (10V are fine too), I did this in 6 > calculators all are well, and no problems remain. P.D. How to detect the problem without open the calc ? turn on it and > hold down the ON key and you will see that the screen flick. JoGa ==== I've contacted with HP European Calculator Manager about this problem, and he says that it is solved in new production hp49 models. I hope he could give a reference or serial number interval to know which machines are potential to fail. J.Manrique > It's scandalous that there is no quality control for these expensive > calculators. Are we to expect more of this from the Chinese > manufacturers ? > It's OK if the 49 is selling for $10 not to have QA, but $150 ?? I > don't mind paying top dollar for a reliable, well made calculator, but > it seems HP > calculator users are getting more and more ripped off as time goes on. > It's the same saga with oil tankers breaking apart and crashing into > each other because the shipping companies crew their ships with cheap > labour and poor skills. Intellectual capital is worth 2c and people > will get burned. The outsourcing marketing engineers should get off their lazy buts and > make sure > people get what they pay for, by enforcing QA at the factory for > incoming components as well as what goes out. It's OK for the Chinese > to fill the world with cheap disposable toys, eletronics and clothes > and other crap, but HP Calculators, that is just INEXCUSABLE. > Resellers shouldn't have to do repairs for new products. The blatant greed even ebbs down to speculating HP calc users > reselling older calculators to make a profit. People who pay $US300 > for a HP32 must be desperate. > > I sell hp calculators in my city, I had a many calculators with this > problem, but in the last month I learn the problem and open one calc > to try repare this, the only problem is the capacitor, only you will > change this 1000uF 6,3V (10V are fine too), I did this in 6 > calculators all are well, and no problems remain. > > P.D. How to detect the problem without open the calc ? turn on it and > hold down the ON key and you will see that the screen flick. > > JoGa ==== Download: http://www.twincar.sk/download/NewOS_073.zip Demo ==== >>As is: graphic calculators are entirely unheard of for high-school >>students in my country. 2 line displays get side looks. > mr>>.You don't say which country you are in. As you may know, some > countries have the 39G, others have the 40G, depending on what seems to be > allowed on calculators in educational institutions (they are really the same > calculator). > You need to be very aware of what your particular education system does not allow. You say that you won't be using it very much at school but you need to be aware that a calculator with a CAS system will get you into immense problems (ie. zero on exam) if you try to use it in an exam where it is not allowed. Be careful to check thoroughly. You may only be able to use it as a resource at home. >>my intent is to use the thing as an aid to studying and, >>simply, as a useful tool to own. I would suggest checking out what software each of them has available to it. For the 48 & 49 see Eric Rechlin's site http://www.hpcalc.org For the HP40G see my site The HP HOME view at http://www.hphomeview.com That may help you decide as you may find a particular piece of software which is must have for you. >>Besides my general lack of skill, I do have an interest in math; perhaps >>enough to see me studying it further after this year. > mr>>.Then I think the 48G+/GX or 49 is best. I tend to agree with this to a point in that the advanced capabilities of the 49G are better. If you're intending to use it a lot at uni then the 49G is more powerful. However, the 40G has most of its abilities, is far easier to use and is much cheaper. >>I understand the 40G is insufficient for further forms of study? Again - >>being only in high-school at the moment - I wouldn't have any idea exactly >>what this calculator would still need to certify it for such study. >>Exactly what advanced functions does one need? My interests are purely >>mathematical - neither engineering nor science. As you say, it depends on what further forms of study you will be undertaking. Being a high school teacher myself I can't really advise on how the 40G copes with uni level maths. I asked a uni lecturer friend and she said that any difference between the 40G and the 49G did not really matter since they used computer packages for the really advanced stuff anyway! She also pointed out that many university courses still do not allow CAS calculators and you should check with your particular campus and course. Some don't even allow graphical calculators! One of my local universities only allows maths students to use scientific calculators for example. >>Lastly concerning the 40G: apparently the calculator makes use of rubber >>buttons? The thought seems very off-putting to me. Has anyone experienced >>any problems with these? I have students who have been using the 40G every day for two years and the buttons are not giving any trouble due to being 'rubber'. Personally I much prefer the feel of the 38G keys but there seems to be no problem with the text rubbing off. The only problem with the buttons is where occasionally with some 40Gs entire rows or columns of buttons suddenly stop working. This is a mechanical problem behind the face plate and is a known warrantee issue - HP have been entirely reasonable about replacing the calculators immediately when this has happened to some of our students. >>I am quite used to filling in an expression on algebraic calculators. >>Calculating the expression; then going back to edit an operator; or >>a number - and compare the results. I get the impression that going >>back to edit anything is impossible or difficult? On the 40G this is very easy. The HOME history remembers all calculations so you can recall and edit them. You can also put an equation into the Solve aplet, go to the NUMeric view and repeatedly SOLVe it for different input values. Of course this depends to a certain extent on the complexity of the calculation. >>the 40G? Is it entirely sufficient for university study? Are there any That depends on which course you're doing. See my earlier comments. ==== I bought the HP40G last week and after I played a little I was very impressed with it's mathematical cabilities!! - It features the same CAS as the HP49G, Release 2000/04/27 (ver 1.19-?). There are much more commands available than mentioned in the CAS manual, e.g.: - GAMMA (gamma function, works even for complex arguments!) - PSI and Psi (polygamma and digamma function) - nice online help for the CAS commands - evidently all CAS commands are accessible from the command line in the home screen! - cool and sturdy design, except the rubber keys ... - not very advanced direct programming abilities (you have to write applets or libraries - I am still not familiar with that) So far I think it is a great price for what you get! (at ebay for around 50...60 EU) Greetings from Germany Axel ==== I'll take a stab at the questions I can... > The 48G+ I am finding rather taxing - both interface wise as well as the RPN > system [although I haven't honestly focused on understanding it yet]. Once you take the time to learn it, this is a very nice calculator. I haven't personally worked with either the 40G or 49G, but I am very happy with my 48G+. > On to the 48G+ which is, likely, my only other real choice (factoring in the > price). > Some questions: I see there is no built-in CAS mode. Is this installable in any way? How > well might an installed version work? This is the largest feature (that I am > aware of) that I would be losing by choosing this model, correct? Well, there are some very limited (emphasis on very) CAS things built in. But there are also some software that can be installed. Particularly, I usually run with ALG48 (has a lot of simplification rules, some functions for more sophisticated manipulation of algebraic expressions (including with autosimplification), and the like) installed, as well as Java (unrelated to Sun's product; it is a replacement for the standard display system that pretty-prints algebraic expressions a la TI 89/92+/Voyage 200, as well as several other things I haven't messed with much yet). It's still pretty limited (and has no exact computation mode), but for anything it can't do, I'm usually in a situation where I have access to Maple. > Regarding the RPN: Looking for a simple, honest opinion. With the refined > forms of algebraic entry available on modern day calculators (40G, for > example) - is RPN really still viable? Is it still an improvement? It most definately is. When we were learning Newton's Method in calculus class (if you haven't taken calculus yet - it's an operation where you plug a number through a certain function, then plug the result back through it, etc., until two successive results are very close to each other), my teacher was sitting there with his TI Voyage 200. He had to recall the previous expression, edit it to use the new number, and reevaluate it. With RPN on my HP, I created a function, dropped my starting number on the stack, ran it through, and then just had to keep punching the meny key for my function until I got what I wanted. I had the answer about twice as fast :-). So I would say RPN is definately viable. There are too many times where the algebraic equivilents to RPN operations are slower, or just plain awkward (like balancing a checkbook), no matter what kind of algebraic entry system you have. > I don't fully understand the system - but one thing makes me uneasy. I am > quite used to filling in an expression on algebraic calculators. Calculating > the expression; then going back to edit an operator; or a number - and > compare the results. I get the impression that going back to edit anything > is impossible or difficult? It depends. Most of the time, when I have to just change a number, I'll do one of two things. I might create an algebraic function, then just plug different numbers into it from the stack. Or I might create my algebraic expression with a variable, duplicate it, and use the | (when) command. Then I just delete the result, duplicate again, and rerun |. Or, you can duplicate the expression before you evaluate it, evaluate it, then do a DROP or SWAP, and edit it again. So this really isn't an issue - while it may not be quite as intuitive as say, on a TI 89, it's really quite easy. > Last, (small) question: is the 48G+ generally bundled with a datalink cable? > Having to buy one won't make me all too much pleased :) Unfortunately, no. They usually run about $15-20 US (a bit overpriced, IMHO, but they also come with CD, etc.). The user's guide, however, has the wiring diagram, so you could make your own if you want. HTH, Mike ==== Hey guy, So only math eh, well HP are extremely well built and user friendly machines (once yeah get to know them), but from what you said and my own experience, you really don't need one. I'm an engineering and mathematics student, for math, well, I've never been aloud a calculator in a course. And also, my HP calculator is an oddity in the math department, most of my fellow students and my professors own TIs, maybe look into one of them, 83s seem to be sufficient for all math courses, but 89s are quite nice too, but like I say, no calculators aloud, you'll know why once you try to calculate the taylor polynomial of 5exp(2/3xsquared) about 1 to 7 factors with a 48G+, lets just say, the test will be over before you get the polynomial. I'd really appreciate it if someone could lend their advice/opinion to my > situation here. My apologies if some/all of these questions have already > been answered on the newsgroup - I am unfamiliar with the group here so I > thought I'd just try. Ignore at will :) I know nothing about graphic calculators [besides what I've read in the last > few days] and very, very little about calculators in general. Furthermore, I > know very little math. On a good day I can juggle but, admittedly, well... > that's juggling. As is: graphic calculators are entirely unheard of for high-school students > in my country. 2 line displays get side looks. This month I begin my final year of high school and [as per the subject > line], am looking to purchase a high-end graphic calculator. I won't be > using it very much at school (if at all) for various reasons - my intent is > to use the thing as an aid to studying and, simply, as a useful tool to own. Besides my general lack of skill, I do have an interest in math; perhaps > enough to see me studying it further after this year. Basically my interest has been in 3 specific models: the 40G; 48G+; 49G; > [$100, $139, $186 respectively as the best prices I am able to obtain > locally]. I have downloaded and browsed the manuals and emulators available. Of these, I found the 40G the most immediately attractive. The CAS feature > I found remarkable - (specifically the input model) and the interface I > found absolutely simple to get around with. The 49G (in algebraic mode), > also - a good bit more effort, but still relatively easy to learn manually. The 48G+ I am finding rather taxing - both interface wise as well as the RPN > system [although I haven't honestly focused on understanding it yet]. > All of these calculators are exceedingly pricy for my budget; specifically > the 49G [which I would like to avoid if possible, based on this reasoning]. The idea would be for me to purchase one and only one calculator for use for > my final year and for any university math degree I may undertake [preferably > the one calculator for the entire course]. I understand the 40G is insufficient for further forms of study? Again - > being only in high-school at the moment - I wouldn't have any idea exactly > what this calculator would still need to certify it for such study. > Exactly what advanced functions does one need? My interests are purely > mathematical - neither engineering nor science. hpcalc.org has, as I can see it, many downloadable applications and such. > Would the installation of some of these be sufficient? Lastly concerning the 40G: apparently the calculator makes use of rubber > buttons? The thought seems very off-putting to me. Has anyone experienced > any problems with these? > On to the 48G+ which is, likely, my only other real choice (factoring in the > price). > Some questions: I see there is no built-in CAS mode. Is this installable in any way? How > well might an installed version work? This is the largest feature (that I am > aware of) that I would be losing by choosing this model, correct? Regarding the RPN: Looking for a simple, honest opinion. With the refined > forms of algebraic entry available on modern day calculators (40G, for > example) - is RPN really still viable? Is it still an improvement? I don't fully understand the system - but one thing makes me uneasy. I am > quite used to filling in an expression on algebraic calculators. Calculating > the expression; then going back to edit an operator; or a number - and > compare the results. I get the impression that going back to edit anything > is impossible or difficult? Is the 48G+ (or the 48G+ with added free software) superior in every way to > the 40G? Is it entirely sufficient for university study? Are there any large > problems or issues I should know about? Last, (small) question: is the 48G+ generally bundled with a datalink cable? > Having to buy one won't make me all too much pleased :) eshylay ==== long posts [here's another one ;)]. Some comments / responses: Firstly concerning my local schooling/university system: Ti calculators are (as I can see), entirely unheard of in my country (South Africa). Basically any question of brand/model requirements would fall to the school and/or university. However, as I mention, I've no plan to use the thing at school in either event. Primarily I'm looking for something to own [simply as a tool] - which I can use for my own interest and study. The idea would be for me to use the thing as a stimulus for learning math, more generally (as mr mentioned). This, natrually aside from anything related to possible university study. As is, I wouldn't know what is required or even allowed in any degree I may eventually undertake. I would first check what the general suggestions/limitations are being given by my local tertiary institutions. Either way, if I am forbid from using advanced calculators during examinations, etc. - then, again, the thing would serve simply for study and experimentation. Mostly this is being spurred on by my interest in the subject of mathematics. However this alone wouldn't justify the cost: the cost would qualify itself if I could use the calculator [in some form] also in university. This is why I was (and still am) recuctant to purchase a model which may restrict me. I buy somehting like this once in a lifetime [crosses-fingers] - I don't mind getting something a little excessive for my immediate requirements if it is a quality product. Given what I've been reading up on [in response to my question, and elsewhere] - I am crossing the 40G off of my potential list. The RPN and added functions of the higher-end models seems too appealing. Note, however, that the 48GX is also out of the question for me. Locally it retails for the same price as the 49G (which is currently on special)... and the memory cards are absolutely -ridiculously- priced. This avenue is completely out of the question, unfortunately. I would purchase either the 48G+ or 49G [I am now considering it again - reason to follow] through my local HP supplier [at reseller prices]. As I mentioned, the 49G is currently on sale. Also, I did check with the supplier - and they apparently offer the 49G with an included PC link cable... this is certainly pleasing. Given my initial purchase reasoning [study] - the 48G+ (without any built-in CAS implementation) does seem slightly silly in my position. I did some appears to me impractical to get a fully functioning system on the 48G+. Now, [to the disgust of my long-term budget ;)]... I am looking to the 49G which appears to have everything (software wise). I went today to demo a 49G model [to see the rubber buttons for myself] and was, honestly, quite dissapointed with them. They seemed hard and unnatural to push. Am I incorrect in saying that these won't exactly go down well with touch typing as such? Perhaps they free up a little over time? Perhaps you simply become used to them? I've read comments everywhere from the keys being pretty good to being downright awful. Final word on the issue: what does everyone think? Are they really no good? This seems a sad reason to ditch what appears to be a wonderful caculator. Some more concerns I was hoping someone could address: - The manuals are bad :) Not much I can do, I guess. Is the concensus, though, that good manuals are really required to do any effective learning? This is a worry for me and, admittedly, one of the things I was most looking forward to with an HP calculator was recieving excellent documentation. A huge pity - but also a reason not to buy one? - The screen protector. I've heard all sorts of bad things about these. Though, I checked and apparently the calculator my dealer stocks is recent - ie. I would assume using the new style protector. Is it still an issue with scratching and rainbows, etc.? - Lastly, I have read reports of dust settling behind the display screen. This sounds, honestly, quite awful. Is this really a problem? No way to rectify it? The impression I get from what I've read is that the 49G is a between a cheap piece of junk and an average piece of junk build-wise. This is absolutely my greatest concern. If I don't eat for the rest of the year [to pay off this calculator] - I want to know that it will last me into the next decade. Understand: I'm very prepared to pay for it - but only if I can be assured that it is a quality product hardware wise [I've no concern over the software]. I'll look after it like gold - possibly also have it insured. But do you all reckon it will last ages [as old HP calculators apparently do]? Basically, to sum up, my choice falls to purchase a 49G or nothing at the moment. Is the 49G (aside from all the complaints of the early models), really worth it. A good calculator will be worth it to me. Is this one a good calculator, I guess the question becomes. Shall I wait for something else to come up down the line? Please - any experience would be wholly welcome. I already appreciate the comments and, likely, I won't bother you with many (any?) more questions... already there are no more calculators to consider :) eshylay ==== > you'll know why once you try to calculate the taylor > polynomial of 5exp(2/3xsquared) about 1 to 7 factors with a 48G+, lets just > say, the test will be over before you get the polynomial. You're right about the HP48, but it's pretty different with the '49 and TI89: HP48GX: 701.84 seconds HP49G: 6.76 seconds TI89: 1.56 seconds A lot has changed from the '48 to the '49. ==== I've had my HP49 for nearly 3 years now and am still amazed at how powerful and flexible it is. In my opinion there is nothing on the market that could replace it. > Some more concerns I was hoping someone could address: - The manuals are bad :) Not much I can do, I guess. Is the concensus, > though, that good manuals are really required to do any effective learning? > This is a worry for me and, admittedly, one of the things I was most looking > forward to with an HP calculator was recieving excellent documentation. A > huge pity - but also a reason not to buy one? > I agree the manuals are bad and an embaresment to to HP especially with manuals from hpcalc. They dont cover the CAS but their coverage of basic operations generally applies to the 49 to. Hpcalc also has a lot of references and tutorials for CAS etc. > - The screen protector. I've heard all sorts of bad things about these. > Though, I checked and apparently the calculator my dealer stocks is recent - > ie. I would assume using the new style protector. Is it still an issue with > scratching and rainbows, etc.? The screen was only a problem on the early 49's. Some people think the screen is clearer without them but then the screen is vulnerable and it weakens the body. I don't use the slide on protecter as it was rubbing the lettering of the keys. I use my old HP41 case instead. Except for where the slide on cover has rubbed the keys (F6, On, Enter) there is little sign of wear on the keys after allmost 3 years. - Lastly, I have read reports of dust settling behind the display screen. > This sounds, honestly, quite awful. Is this really a problem? No way to > rectify it? I read this also. Since my 49 has a pretty hard life I put some clear tape over the serial port. No dust in 3 years. > The impression I get from what I've read is that the 49G is a between a > cheap piece of junk and an average piece of junk build-wise. This is > absolutely my greatest concern. If I don't eat for the rest of the year [to > pay off this calculator] - I want to know that it will last me into the next > decade. Build quality of the 49 is very solid despite the bright blue look, very stiff. I suspect but can't prove without destrying my treasured 49 that it is as robust as my HP41. It is far better than any other Calc including the TI's. The keyboard is a dissappointment compared to past HP's but is still better than it's competition. I find keying in data on the 49 to be about half the speed of what I could do on the HP41 or the 48. Understand: I'm very prepared to pay for it - but only if I can be assured > that it is a quality product hardware wise [I've no concern over the > software]. I 'd certainly recommend it but it is pricy and takes some time to grow into. I've tried the TI92 which is even pricier and found that it's OS was to restrictive, inflexible and felt cheaper. I am tempted by a 48 to get the keyboard but the lack of memory would be a major obstacle or cost. I'll look after it like gold - possibly also have it insured. But do you all > reckon it will last ages [as old HP calculators apparently do]? The future of a 49G type device is a real worry I am still waiting to see some sign that it's not the last of it's line. I'd like to treat mine like gold but it's developed in to a trusty tool and is like your favourite hammer, it goes everywhere and is simply thrown into the toolbox with everything else. > Basically, to sum up, my choice falls to purchase a 49G or nothing at the > moment. Is the 49G (aside from all the complaints of the early models), > really worth it. A good calculator will be worth it to me. Is this one a > good calculator, I guess the question becomes. Shall I wait for something > else to come up down the line? If you don't want the full CAS I suspect you can load a 48G+ up to get something very similar to the 49G. I'm temped to get a 48G+ myself but the 1.5Mb on the 49G is very handy for storing all sorts of applications, formula and junk. As I use the 49 as a tool it's ability to store a large library of additional tools in directories is a major plus that is not available on any other calculator or PDA on the market. This library and ease of programming on the calc more than make up for the slightly slower keyboard. If only HP or someone would put the 49 package with a 48 keyboard and rev the processor up. Instead their looking at Chinese Casio clones. HP's attitude has pissed me off so much I no longer consider HP products for Business or at home. Please - any experience would be wholly welcome. I already appreciate the > comments and, likely, I won't bother you with many (any?) more questions... > already there are no more calculators to consider :) > eshylay ==== > HP48GX: 701.84 seconds > HP49G: 6.76 seconds > TI89: 1.56 seconds Can you tell me how did you do the test? (commands used, arguments...) I don't know well the 49G. ==== hi NK, HAPPY NEW YEAR to you too :) and to everybody else. i may have sound a little serious. oh well, the pitfalls of writing. is turning to a favorite by the by. Greetings, > Nick. > hi NK > > yea, but maybe some people happen to use it (and i use it sometimes). > and if you got a bussines or a very curious girlfriend, then you may > want to throw dirt some day. but i seriously doubt anybody need this > unless they are in trouble. > > <639cb51.0301021103.11195736@posting.google.com>... > > the best there is 'eraser' (for windoz): > > > > > http://www.tolvanen.com/eraser/ > > > > > it also happens to be free :) choose the gutmann method (Peter > > Gutmann), which is default > > > > http://www.usenix.org/publications/library/proceedings/sec96/full_papers/gut m ann/ > > Even better: Don't use M$ ;-) > > Greetings, > > Nick. ==== > I doubt that the S&E 600-ST actually calculates with infinite precision > either. > Ah, well, yes it does, it's just the manufacturers didn't put all the > markings on the scales. :-) There's not enough room for all the markings. My (admittedly feeble) understanding of physics is that there are only a finite (but very large) number of positions the circular slide rule can be set to, based on the Planck distance. But perhaps I'm wrong. ==== > Since slide rules are *analog* computers, they do indeed have infinite > precision, Analog systems don't have infinite precision. Physical limits, such as the Planck length, prevent this. Unless I'm mistaken, which is entirely possible. ==== > Since slide rules are *analog* computers, they do indeed have infinite > precision, Analog systems don't have infinite precision. Physical limits, such as > the Planck length, prevent this. Unless I'm mistaken, which is entirely > possible. I have the impression that infinite precision is used in this thread instead of arbitrary precision ??? Infinite precision is already built-in in all calcs, capable of symbolic manipulations. The symbol pi for examble, not evaluated to a number but used as symbolic name, has infinite precision. It is exactly what it is, pi and not a numeric approximation. The numeric approximations of pi on the other hand, can have arbitrary large but yet finite precision. Aren't the definitions of maximum precision and accuracy of a machine the following?? 1) eps: the smallest positive number that added to x returns something different than x. 2) Precision=-LOG(eps/x) 3) Accuracy=-LOG(eps) If they are, then any number can have arbitrary but not infinite precision and/or accuracy. Sorry if I misunderstood anything, greetings, Nick. ==== [OT! This thread is waxing philosophical... or waning philosophical, depending on your point of view... or lack of one. ;-) -jkh-] > Infinite precision is already built-in in all calcs, capable > of symbolic manipulations. The symbol pi for examble, > not evaluated to a number but used as symbolic name, > has infinite precision. It is exactly what it is, pi and > not a numeric approximation. The numeric approximations of pi on the other hand, > can have arbitrary large but yet finite precision. Those are not the only meanings of exact or precise. Here's another one: The real number pi has an exact location on a number line, not merely a symbolic one. It really is *exactly* at that point, and not one yoctofermi to the left or right of that point. In fact, point, location, and number are synonymous in that context; each is specific, exact, precise, unchangeable, constant, etc. On the other hand, the *physical* location of that point on a *physical* length can only be *approximated*, and it is well understood (I hope) that the pi mark on a slide rule is only intended as a calculating aid and not as a dogmatic declaration Here Lieth Pi, Only And Exactly Here, And Nowhere Else. But the important thing to realize (lost on many people) is that pi REALLY IS an exact point that lies exactly SOMEWHERE on every slide rule (preferably at the very tip of a pi mark which narrows to a point, like an arrow or spear, engineered to visible-light wavelength tolerances). Don't confuse the real with the observed, as the Positivists do. If person A (working in secret) drops some stones into a well, and some time later person B (working in secret) drops more stones into the same well, there *really is* a number of stones, consisting EXACTLY of the total A+B, sitting at the bottom of the well, even though NOBODY knows what that number is. Nobody knows where pi is on a slide rule either, but it's there, with infinite precision... somewhere. Koan coda: HP's left hand is designing new calculators. HP's right hand knows nothing about this. So, is HP *really* designing calculators or not? -Joe- The cat knows! -- Erwin Schr.9adinger ==== > Maybe we should all get a Concise rule with an HP-50 > logo on it! It might be the last new RPN HP we see. WOW! Great idea! I'll betcha they'd sell out in no time! If you arrange it, I promise I'll buy a dozen. -Joe- ==== > On the other hand, the *physical* location of that point on a *physical* > length can only be *approximated*, and it is well understood (I hope) that > the pi mark on a slide rule is only intended as a calculating aid and not > as a dogmatic declaration Here Lieth Pi, Only And Exactly Here, And Nowhere > Else. Don't you hate it when computing gear Lieth to you? I sure do... ==== > Why is it quite impossible? In a block of data, a change to a bit in > any position (byte and bit) has a predictable effect on the bits of the > CRC. While it may not be the case that a single byte change can be > found to get the desired CRC, it is almost certainly possible to find a > small number of changes to unused bytes to obtain any desired CRC. > The idea of a CRC is that it is impossible and not just *quite* impossible > to get the same CRC for a block when changing only one byte in it True. But that wasn't the question that was posed. If you patch one byte in a CRC'd block, can you find another unused byte to change that will make the block come out to the same CRC? In general, if you have only one unused byte to work with, the answer is no. However, it is not that difficult to come up with changes to a small number of unused bytes that will result in the desired CRC. Each individual bit of the data block changes a particular subset of bits in the CRC, such that flipping that data bit flips the corresponding CRC bits. The precise mapping of the data bits to the CRC bits is determined by the CRC polynomial. This characteristic is why a CRC should not be used as a MAC (Message Authentication Code) for encrypted communication, and is part of the reason that WEP (Wired-Equivalent Privacy) on encrypted 802.11 wireless traffic is so easy to crack. ==== Try here: http://www.hpcc.org/calculators/hp48.html#books HPCC members benefit from a discount. HPCC #1046 ==== > Does anyone have for sale, or know of someone who might have a copy > that they are willing to sell, of Volume II of HP 48 Insights, a book > published in the early '90s by William C. Wickes? I have Volume I but > can't locate Volume II. If you're interested in 48's ML there are some books on http://www.courbis.com One of them is in English, others are in French There are freely available as PDF files thx to their author(s) / editor Luc > ==== Please help me save a longtime friend and faithful servant, my HP41CV. It worked great until a month ago when the batteries seemed dead. I put in fresh batteries, it worked but I noticed it now turned itself off after a minute of inactivity. Some weeks later I turned it on again and ... nothing. Hmmmm, it's never gone through a set of batteries that fast. Oh well... So I put in another set of new batteries. Now it gets interesting - the instant the batteries make contact the LCD display shows repeated non-characters across the display |/|/|/|/|/|/ which quickly start to fade. Connecting power several times yields similar but not identical results - sometimes the afore-mentioned patter appears, other times its a row of semicolons. And sometimes the fading takes longer but it always fades eventually. Any ideas? Tubori ==== The slide-on cover of the HP38G (high-school version of the HP48) has the mysterious number 6.0030000004 molded into the plastic. Its mathematical meaning has eluded the best and brightest, but not me! It was derived from the number 48 and 38. I have discovered a simple proof which unfortunately this newsgroup is large enough to contain: (190423*ASINH( 48 ) - 148144*ASINH( 38 ))/37911 = 6.0030000004 Golly. -Joe- ==== > And does [using TEVAL] take display time into account? The screen is actually redrawn only after TEVAL exits back to the eternal system outer loop where screen display actually occurs, so TEVAL does not, in general, time the normal final updating of the display, although any waiting for user keypresses will of course run up the clock, just as does a taxi meter while the vehicle is stuck in traffic :) If you were to type ahead to keep the kestroke buffer from emptying, the screen would not even be redrawn at all, so there is something to be said for considering that display redrawing is done in free time, not in working time (this will of course be objected to by the blue-collar internal routines of the OS, once they get unionized :) By the way, TEVAL also times its own contribution to using up time while timing everything else, just like an hourly worker who clocks in just before starting the day by taking a magazine into the bathroom :) Say, am I getting paid for my time spent writing this post? If so, it's a useful demonstration of the quantum mechanical assertion that measurements are affected just by taking them. [r->] [OFF] . ==== > And does [using TEVAL] take display time into account? The screen is actually redrawn only after TEVAL > exits back to the eternal system outer loop X LOL ==== I dont know what is your school level but, if I remember correctly, I learned LOG and similar functions in my first secondary school years (it was called classical course around here)when I was around 12 years old. Dont be ashamed to ask what migth be seen as dumb questions. I remember receiving a slide rule as a gift when I was 12 year old. I asked my father what were those SIN, COS and TAN functions on it. He tried to explain what they could be used for. It was only later in my secondary course (around 12 grades) that I understood these. So, back to your question. The base 10 logarithm is the number you must raise 10 to get the argument of the LOG function. For example: LOG(10) = 1, that is 10 raised to the power 1 gives...10 (of course) LOG(100) = 2, that is 10 raised to the power 2 gives 100 LOG(1000000) = 6 that is 10 raised to the power 6 gives 1000000 Observe that the answer to the LOG function is also the number of zero in each argument. LOG(2) = 0.3010299956... So 10 raised to the power 0.3010299956... will gives 2. LOG(769) = 2.8859... So 10 raised to the power 2.8859... will give 769 If you truncate the above answers and add 1 you get the number of digits of the argument. Truncate means keep only the integer part (before the decimal). In reality you get the order of magnitude of the number (or the number of digits before the decimal). The total number of digits can be infinite like in PI or square root of 2, etc. LOG(SQRT(2)) = LOG(1.4142...) = 0.1505 In the above example you get, for each argument, the following: Argument LOG After truncating Nb of digits of the argument 10 1 1 2 100 2 2 3 1000000 6 6 7 2 0.3010... 0 1 769 2.8859... 2 3 1.4142... 0.1505... 0 1 I hope that this is helping a bit some newcomers to the wonderfull world of maths. Jean Lemire fron Montreal, Canada ==== X > I used to just have mini-font on the stack. After I got used to > mini-font, I decided to have everything in mini-font. That way I can > see more information at a time. Likewise, except that nowadays I nead reading glasses anyway. Without the glasses evreything seems fuzzy in about three meter radius. ==== you need to copy the GROB to TEMPOB first. HTH > Andreas > I found another solution. I use MAKEPICT# to create a 131*64 blank grob and do my Gor's on that grob, that way I don't overwrite anything. I would still like to know how to use the @ and what it does. ==== Well, if you do ID SS and a varaible called SS exists, just that (ID SS) will recal the variable). so you should do: ' ID SS ( no eval ID SS ) @ IT ( I do beleive that @ returns a boolean to say if the variable existed or not ) :: do your stuff ; > I am writing my first SYSRPL program. It calls the grob SS from memory > and then copies another grob (MRK) onto that one. But it seems that when I call it to the stack with ID SS that the > original gets replaced by the new formed grob. So I have to RCL it from memory somehow. Here is my problem. If I do > ID SS > @ > then I get external results in the stack, and I have no idea whether I > can work with that further on. Like displaying the grob. I'd like to > see the grob, not 'External'. If I put mulitple @'s in the program then my calc crashes and clears > my memory. What is the syntax to use for the @ command? Or SAFE@? ==== while reading Science and Engineering Mathematics with the HP49G by G. Urroz, i came across his simple program showing the use of INPUT command. it's like this: << Enter a: {<-/:a: {2 0} V} INPUT OBJ->> what is meant by '{2 0} V'? in some other examples on the net just '{1 0}' is used. what are those parameters? thank you, -- fuf ==== Use Google search on comp.sys.hp48 (Clip&Paste into your browser) : http://groups.google.com/groups?hl=fi&lr=&ie=UTF-8&oe=UTF-8&threadm=5lili6%2 4d19%241%40news.iastate.edu&rnum=4&prev=/groups%3Fas_oq%3DINPUT%26ie%3DUTF-8 %26oe%3DUTF-8%26as_ugroup%3Dcomp.sys.hp48%26as_usubject%3DINPUT%26lr%3D%26nu m%3D100%26hl%3Dfi while reading Science and Engineering Mathematics with the HP49G by G. > Urroz, i came across his simple program showing the use of INPUT > command. it's like this: << Enter a: {<-/:a: {2 0} V} INPUT OBJ->> what is meant by '{2 0} V'? in some other examples on the net just '{1 0}' is > used. what are those parameters? thank you, > -- > fuf ==== The HP49G Advanced User's Guide is your friend. See http://www.hpcalc.org/details.php?id=2998 if you don't have a hardcopy, Markus while reading Science and Engineering Mathematics with the HP49G by G. > Urroz, i came across his simple program showing the use of INPUT > command. it's like this: << Enter a: {<-/:a: {2 0} V} INPUT OBJ->> what is meant by '{2 0} V'? in some other examples on the net just '{1 0}' is > used. what are those parameters? thank you, ==== > << Enter a: {<-/:a: {2 0} V} INPUT OBJ->> what is meant by '{2 0} V'? in some other examples on the net just > '{1 0}' is used. what are those parameters? instead of searching with Google, here a short description. The INPUT command is the simplest and most important form of a user-dialog with the 49 besides the keyboar itself. But I would not be surprised if it is not payed any attention to in the 49 manuals. INPUT has always 2 arguments. In any case a string in level 2 which is the title of input dialog. In level 1 may be either a string (maybe the empty string in which case the cursor is waiting for input just at the left margin) or, for a more involved dialog, a list. This list *must* contain a second string, the command line prompt, <-/:a: in your example. In addition, it may contain a single or a list of 2 reals, and one or several of the names ALG, alpha (meaning the symbol alpha!) or V, in any order. If ALG is present, algebraic mode is set, if alpha is present then the ALPHA mode is set, and if V is present then the verifier becomes active if you enter your input. The two numbers 2 and 0 in your example specify the cursor postition. 2 or the first real in the general case means second row. 0 means end of this row. With a positive number instead you may fix also the column position for the cursor. There are still further possibilities, described in detail in the Advanced User's Reference Manual for the HP48G (for which I payed 30 US$, hela :-). But maybe they are explained also in the 48FAQ. The verifier simply verfies if parsing works, i.e., if your input was at least syntactically correct. If not, it yields a warning and prompts for correcting your input. The OBJ-> command after the INPUT parses your input string which may result in a lot of information, to long to be explained here. In the simplest case, with a real number or zint input you'll get the just this number. Hope this helps, ==== thank you very much for your very extensive answer! this is just perfect! thanks :) >> << Enter a: {<-/:a: {2 0} V} INPUT OBJ->> what is meant by '{2 0} V'? in some other examples on the net just > '{1 0}' is used. what are those parameters? > instead of searching with Google, here a short description. The INPUT > command is the simplest and most important form of a user-dialog with > the 49 besides the keyboar itself. But I would not be surprised if > it is not payed any attention to in the 49 manuals. INPUT has always 2 arguments. In any case a string in level 2 which is > the title of input dialog. In level 1 may be either a string (maybe the > empty string in which case the cursor is waiting for input just at the > left margin) or, for a more involved dialog, a list. This list *must* contain a second string, the command line prompt, > <-/:a: in your example. In addition, it may contain a single or a list > of 2 reals, and one or several of the names ALG, alpha (meaning > the symbol alpha!) or V, in any order. If ALG is present, algebraic > mode is set, if alpha is present then the ALPHA mode is set, and if V is > present then the verifier becomes active if you enter your input. The two numbers 2 and 0 in your example specify the cursor postition. > 2 or the first real in the general case means second row. 0 means end > of this row. With a positive number instead you may fix also the > column position for the cursor. There are still further possibilities, > described in detail in the Advanced User's Reference Manual for the > HP48G (for which I payed 30 US$, hela :-). But maybe they are explained > also in the 48FAQ. The verifier simply verfies if parsing works, i.e., if your input was at > least syntactically correct. If not, it yields a warning and prompts for > correcting your input. The OBJ-> command after the INPUT parses your input string which may > result in a lot of information, to long to be explained here. In the > simplest case, with a real number or zint input you'll get the just this > number. Hope this helps, > -- fuf (fuf@mageo.cz) ==== X > I figure (Hehehe) that between the Urroz books and Nick K (and the rest of > this NG). I made it through the 5 maths classes with > flying colors. I would highly recomend you getting the two books AND the > trig marathon and the series marathon by Nick K. X I can only second that suggestion. ==== >Does anyone know if it is possible to swap screens? Is it a soldering >iron + steady hands job or a mini-plug swap-in? Its soldering iron, plus steady hands, plus a microscope to see to align the display lines up. You won't manage except by luck. -- Bruce Horrocks Hampshire England bh@granby.demon.co.uk ==== > Does anyone know if it is possible to swap screens? Is it a soldering > iron + steady hands job or a mini-plug swap-in? People have been successfull. After opening the calcs you must untwist the twisty things and swap the boards. DO NOT remove the lcd from the metal frame. Post result to the group. Greetings Steve Sousa ==== > Its soldering iron, plus steady hands, plus a microscope to see to align Soldering iron for what???!!! Greetings Steve Sousa ==== > while holding the 49g i thought wouldnt it be great if the put some buttons on > the side? That way when your holding it you put those finger to use and speed > up calculations. > > be sure to understand http://www.anti-matrix.net First of all I am under age to any of this crap so it makes no difference to me! Second I still believe its a hoax, and third since I wasn't going to do it I thought u guys would like to know about it! CID ==== > if anyone is interested). It talks about a new HP scientific calc. I > think its just junk but why would someone take the trouble? Here is My name is Cyrille de Br.8ebisson, I work for the HP Calculator > division. > Some > of you may know my name as I was part of the Australian Calculator > operation > and was heavily involved in the development of the 49G, 39G and 40G as > well HP is developing a new scientific calculator, and we would like to > propose > you to take part in this process as alpha and beta testers. I need to ask you to keep this information confidential, and if you > are > interested in participating in this program, or would like more > information > before taking a decision I would ask you to fill and return to me the > attached Non Disclosure Agreement. If you sign this document, it means that you agree not to disclose > anything > about your involvement in this program for a duration of 2 years (but > HP > usually cancels such agreements at product launch). > O yeah and fourth I don't know who Cyrille de Br.8ebisson is!!! ==== i think he was refering to the link at the bottom of my posts. just a short comment on that. its real buddy. 10 years + of research. if you think you know everything, you dont. if you think it doesnt effect you, well you have no idea. be sure to understand http://www.anti-matrix.net ==== X > O yeah and fourth I don't know who Cyrille de Br.8ebisson is!!! I your case I would call it an understandable mistake. Use your browsers Search in this page with Cyrille de Br.8ebisson http://www.hpcalc.org/links.php to find his page. Still there is no direct link that he is from hp.com BUT To draw the right conclusions without any prior knowledge may be hard I guess? ==== HP earns money on the HP 49G. > i want to ask does anyone > know HP earn or lose money on HP49g? i havent do much calculation like b4, and now > i need, but i found out everywhere selling their > 49g 32sii like a double price.. and hp dont have it... > how sad........ ==== This creep zeevhe@013.net.il is selling Emu48CE with Murray's kml script! Doesn't this break about a dozen laws? I've gotten no response to my complaints to handango. Is anyone else as disgusted as I am about this? http://www.handango.com/PlatformProductDetail.jsp?siteId=1&jid=DXDB17D6F2FA3 428398X458XBC635625&productId=46410&optionId=1_2_2&productType=2&catalog=30& t xtSearch=hp48§ionId=0&platformId=2 For those who may not be aware, Emu48CE is freely available here: http://www.hpcalc.org/hp48/pc/emulators/emu48ce.exe The kml shown at handango is available here: http://www.hpcalc.org/hp49/pc/emulators/emu-ppc48-49.zip ==== > I don't have a cable to connect my 48GX to a computer; > how do I get the files I want from hpcalc.org into my 48gx? > Is there some way I can type them in? You can get *any* object (up to about 1/3 of free memory size) into your calculator by manual typing, just as you can walk all the way to any place reachable on foot, although some places may be long enough a walk that you'd get tired feet :) User programs which can be displayed as text are the easiest, but any object can first be downloaded to an emulator on your PC, then converted to a hex string form using the popular ->ASC & ASC-> which were once used to post small binaries on bulletin boards, which many users no doubt hand-typed into their calculators, so you can surely do that same hand-typing yourself. You can find the latter programs in the newsgroup FAQ, as well as on www.hpcalc.org, and they are supplied in a sort of self- bootstrapping package which itself can be manually typed and installed into your calculator, as can ASCI & ASCO for the 49. Try it first; then you'll really appreciate the value of a cable :) [r->] [OFF] . ==== later I'll ask again. Sorry if this turns out to be a repeat: how do you graph an integral on the HP 48GX? (the S is the integral > sign) > x > S t^3 dt > 1 You can just plot the closed form (in this case, 1/4 * t^4). The area of interest is from 1 upwards. You can restrict the horizontal view by having it start at 0, which will speed it up. If there's no closed form, use the Equation Writer to write your integral into HP syntax and plot that. For instance, the 48 can't find the closed form of sin(x)^2. Write that as an integral from 1 to X. Press Enter to see it on the stack as 'S(1,x,sin(x)^2,x)'. This will be slow-w-w-w to plot. In either case, you can speed up plotting by typing #2 RES before you plot. This reduces the number of points plotted, and the reduced resolution is still pretty good. And after the test, give the manual a good read. :-) Bill ==== > how do you graph an integral on the HP 48GX? (the S is the integral > sign) Ex: x > S t^3 dt > 1 Any help would be greatly appreciated. (Test thursday!) Well the result of that integration is a function, (t^4-1)/4. So put that into EQ and then plot like normal. -- Kenyon Ralph | www.theralphs.us | Semper Fi ==== > How to write the [user] programs on a PC (notepad?) Notepad (using plain text) will do just fine; it's all I've ever used, although plenty of higher-tech, PC-dependent development environments (with some learning curve) also exist. If you type the following header on the first line, it will set the calculator modes automatically if you later actually download the program file using Kermit: %%HP: T(3)F(.); All special characters may be represented (and posted here) in plain ascii text. For example, you recognize at once that << >> means a pair of program delimiters; see the link below for all the rest. > and then transfer them to the 49G ... Pick a PC transfer program (anything from MS-DOS Kermit to the latest calculator communication package), start Kermit receive (or Kermit Server) on one, then send (or get) stuff from the other. You could leave your calc in Kermit server mode all the while that you initiate transfers from the PC (this is even required by the latest 49G PC GUI-based comm program), or you could use the menu keys in the 49G Filer to send things and receive things individually, at any time you want to transfer something. Actually, there is also a splendid PC tool for trying out the programs on a PC first; this tool can also send the finished, tested programs directly to your calculator, and at the same time it can serve as a complete backup of your calculator (if not a substitute for it, whenever your PC is at hand). This marvelous thing is called an emulator; it *is* your calc (or a second, free calculator), but running on your PC, and files can be zapped between these two calculators as simply as kids do it in school. Get a whole lot more info along these lines from: http://groups.google.com/groups?selm=3DA3B4DB.64FEAB5D%40miu.edu [r->] [OFF] . ==== How to call from UsrRPL program, the UFL (Universal Font Library) ?. Please, help me !. Miguel Angel CAPORALINI HERK (M.A.C.H.) ==== > How to call from UsrRPL program, the UFL (Universal Font Library) ?. > Please, help me !. > Miguel Angel CAPORALINI HERK (M.A.C.H.) > AFAIK you can access those font(s) only from SysRPL and use them best from ML. More info on this is in the UFL.DOC file. The complete UFL package is available on www.hpcalc.org Raymond ==== > i would like to connect my hp82240a infrared printer to a pc. There is a lot more support for using a PC as a substitute to receive and display data in the absence of an 82240 printer than as a source to send data itself to the printer (except perhaps for HP palmtop PCs): http://www.hpcalc.org/search.php?query=82240 > have any of you ever tried to do that > or know the protocol of the printer interface > or the lower ir - protocol? A special physical layer protocol with phase encoded bits and four error correction bits per transmitted byte (the reason being that data transfer to the printer is one-way only, so the printer is left responsible for error recovery, without being able to request re-transmission) http://www.hpcalc.org/hp48/docs/programming/82240bte.zip More discussion (the document above became available meanwhile): http://groups.google.com/groups?selm=3B31D66D.3CAF2941%40miu.edu The more conventional serial IR [SIR] half-duplex physical protocol does not work with the printer, but it's how HP48 calculators talk to each other, or to PCs which offer an IR COM port option: http://www.hpcalc.org/hp48/docs/programming/48techni.zip The easiest way to send data from most PCs to the little portable thermal printer roll is via an HP48 calculator as an intermediary; someone may even have developed a calculator program for this purpose. Perhaps you can instead install a conventional serial wire interface into the printer (in which case you can advertise modified printers that are HP49G-ready, inasmuch as the 49G has no IR at all :) Another way would be via a device for receiving serial wire data and transmitting it, one-way, using 82240 printer protocol. Aegis makes (or made) conventional wire <-> IR serial/IrDA converters, but I never heard of any commercial device made for the 82240, because all advanced HP calcs before the 49G had the ability built-in (and perhaps so does the 49G, except for a missing LED). [r->] [OFF] . ==== > How can I evaluate a LOG in base 2 (something like 2 LOG X), if possible? You can use the base conversion log, either base e or base 10 logs. Let's say you want LOG(10) in base 2, you would do ln(10)/ln(2) or log(10)/log(2). Both give pretty much the same answer (I have discovered a few differences in the twelve-hundredths sometimes, but I don't know why, I would assume ln is more accurate) ==== Enough already, point taken! Now, does anyone have any comments about the 15C simulator for PocketPC? > I found this fantastic 15C simulator for PocketPC: > http://www.lygea.com/pocket15cdetail.htm > Works just like a real calc, only better - bigger matrices, more program > steps, view whole stack and all registers at once, cut and paste, etc. > Graphic of calc is beautiful. The author has done a brilliant job. It's not > free like Emu48, but it doesn't cost much and is perfect if you just want > something simple, yet powerful, like the good ole 15C. I think we should > support quality work like this that keeps RPN and the old HP way alive. > ==== > In most serious forums pseudonyms are a no-no. [...] > I for myself will think it over to even answer to no-names/pseudo-names... I agree with you but, in my opinion, there are a few cases where using a > pseudonym is justified and appropriate. Minors: I think they should not use > their real name on Internet, so as to keep them away from psychos and also > because all the nonsense they might say now should not mark them for life. > Celebrities: Can you imagine Kubrick or Hawking posting to this newsgroup > with their real names? They would just want an answer to a specific question, > not a thread on their life and work! I don't know where Stanley Kubrick is now, but I doubt he has Internet access from there. - Michael -- Remove No Spam Please from return address. ==== > Looks nice... real nice. I need to find a maunal though :) I've only used > my 48 before. > I've installed the demo on my iPaq 3850. Works fine and I love the rotated > display. Now I just need to decide if it's worth the price to keep it on a > non-personal (ie, work bought it) device. I'm sorry, you've posted under a pseudonym, so therefore your opinion carries you post to this group. Also, you must inform as if, and when those details change in the future. ==== > Enough already, point taken! Now, does anyone have any comments about the > 15C simulator for PocketPC? > Looks nice... real nice. I need to find a maunal though :) I've only used my 48 before. I've installed the demo on my iPaq 3850. Works fine and I love the rotated display. Now I just need to decide if it's worth the price to keep it on a non-personal (ie, work bought it) device. Dale. ==== >With less than a month of use, several of my HP49 key markings are >wearing off! It appears that these keys are just painted? If so, this >is I have an ID93 machine and its key markings are as fresh as the day I bought it. I suggest that you must have especially abrasive fingertips. Please take them back to where you got them and demand a new set. ;-) -- Bruce Horrocks Hampshire England bh@granby.demon.co.uk ==== >With less than a month of use, several of my HP49 key markings are >wearing off! It appears that these keys are just painted? If so, this >is I have an ID93 machine and its key markings are as fresh as the day I > bought it. I suggest that you must have especially abrasive fingertips. > Please take them back to where you got them and demand a new set. > ;-) OR the slide-in translucent cover is the thing which takes the paint of the keys ?? ==== Hey! I've just upgraded my ROM version from 1.18 to 1.19-6. Since that Neopolys, Bode-Routh programms do not respond. e.g.: 4/s(s+2) numr:4 den:0. i did whatever the manual says ,but while i am writting 1 2 0 on the calculator,it displays 0. Is something wrong with the new version?please respond ,because i am in exams. thanks a lot and sorry for my English ==== > How do I manage the I/O options in the HP49, > analogous to I/O on the 48? Some 48G menus have become orphaned on the 49G by having neither a keyboard assignment nor even an appearance as a choice in any other menu, but all of the original 117 menus of the 48G still exist, and those that have become scarce are listed here: http://groups.google.com/groups?selm=3C967603.C425EE1A%40miu.edu http://groups.google.com/groups?selm=3C3F7DA4.30DCB0F7%40miu.edu > It doesn't seem to be documented. A product with too many details intimidates the modern purchaser (or their high school teachers :) [r->] [OFF] . ==== problem in real arithmetic. That would be me. ;) Man, what I write must be really lacking in distinctive qualities for me to be mistaken for other people all the time. ;) >But usually, a problem in complex arithmetic >is more easily solvable therein, and indeed, I have an elementary proof >of cyclicity of the sequence f of a few lines. Would that be this proof? : f(n+1) = i*f(n) + f(n-1) = i*( i*f(n-1) + f(n-2) ) + f(n-1) = -f(n-1) + i*f(n-2) + f(n-1) = i*f(n-2) Rewriting the above we get : f(n+3) = i*f(n) ---------------------------------------------------------------------------- --- Jonathan Busby - before replying. ==== > My program is << / DUP INV SWAP i + OVER i - INV >>. > It takes a = f(0) and b = f(1) on levels 2 and 1 > respectively, and produces 'b/a' which is f(1)/f(0) > and 'a/b + i', which is an alternate form of f(2)/f(1), > and '1/(b/a-i)', which is an alternate form of f(3)/f(2). > Given f(0) = a and f(1) = b and f(n+2) = f(n) + f(n+1)*i, > then f(2) = a + b*i, f(3) = b + (a+b*i)*i = a*i > f(1)/f(0) = b/a > f(2)/f(1) = (a + b*i)/b = a/b + i > f(2)/f(3) = (a +b*i)/(a*i) = -i + b/a, so > f(3)/f(2) = 1/(b/a-i) > If a and b must be stacked in that order, 35 bytes does it. Although Jonathan's solution of the problem (see below) is 2.5 bytes smaller, I range the winners as follows: 1st PRICE: Virgil 2nd PRICE: Jonathan Main reason for this decision is that Virgil's solution respects the the stack order of a,b (i.e., a in level 2, b in level 1) and also that his expressions for the 3 complex terms are the most simple ones for a normal human being (not the HP49 :-) Jonathan's term for f(3)/f(2) is 1/(a/b + i) + i which is identical with Virgil's expression (although one wouldn't discover this identity with the 49-commands EXPAND, COLLECT, SIMPLYFY :-) If I would not take into consideration the order of the arguments a,b, the simplest solution in UsrRPL is AFAIK the 32.5 bytes program << / DUP INV i + OVER i - INV >> he is last who'd need any device :-) but for documentation. Before I repeat the problem's history, I'll express my feeling that God likes the number 12. Not only that this was once the number base of the common ancestors of many European peoples, but look at this example: The well-tempered tuning in the western music introduced by the (deeply religious) compositor J.S. Bach is based on the 12th root of 2 which I call Bach's constant in COMPOSE (by Raymond and myself, unfortunately only available for the HP48 although Raymond promised me since long to port it to the HP49 :-). To get the next half-tune in the well-tempered tune scale one has to multiply the frequency by Bach's constant. > The sequence f when drawn in a clock face, f(0)=1 at 12 o'clock, > f(1)= 1 at 1 o'lock etc looks as follows: > > * > * 1 * > 1-i 1 > * * > -i 1+i > > * -i * i > > * -i-i * i > > * -1 * -1+i > * -1 > > And this is the legend: When God had created Heaven and Earth and > Mankind he took a little rest and looked at the sequence defined > by f(n+2) = f(n) + i*f(n+1). Notwithstanding, God saw at once the > above circle. And he said > > Ok, this may be the clock face for my creatures > > The period of [f(n+1)/f(n)] is 3. AND THIS HOLDS TRUE FOR ANY > sequence f starting with any two reals a,b distinct from 0 and > obeying (1) above. Hence, my next challenge: > > Write a shortest possible UsrRPL program which yields the > 3 different terms of the sequence [f(n+1/f(n)] where f is > defined above with initial values a,b <> 0. - Wolfgang ==== > Here is my solution, 28 bytes only: > << -1 UNROT ->V3 PROOT 2 GET >> Since someone indicated the growing percentage of newbies reading here, we might point out that the cleverly used command ->V3 gives very different results for different states of system flags -15 and -16, so this program is shorter at the expense of taking a chance that it may, under some unanticipated conditions, get entirely wrong results, fortunately of so little consequence in this mere thought exercise. Certain mini-challenge rules provide that one may assume the pre-condition of flags, yet at the same time, such contrivances encourage the risky programming and engineering habits of assuming the repeal of Murphy's laws; this seems like a good occasion to re-post a link to a valuable essay about good engineering practice being comprehensively thorough, taking nothing for granted, which once again, despite the best of intentions, has suddenly just dealt NASA another tragic blow. The 1996 Woodruff Distinguished Lecture, by a past Chairman of the NASA Space Systems and Technology Advisory Committee: http://www.me.gatech.edu/me/publicat/AugTranscript.htm There are a lot of tough, real-world challenges engineers face that are not terribly elegant and that do not lend themselves to theoretical solutions. These are the lessons that you don't get from parchment degrees. They are not lessons of great philosophical value. They are the lessons of experience. And had I learned these lessons in school, I could have saved my employers literally billions of dollars over my career. Billions of dollars, millions of lives, and thousands of future generations of mankind can be benefitted by complete and comprehensive knowledge, application and growing direct experience of the full range and depth of our own human consciousness, which we do know how to teach in school, right along with the ordinary curriculum of our parchment degree. http://www.mum.edu . ==== > Here is my solution, 28 bytes only: > << -1 UNROT ->V3 PROOT 2 GET >> > Since someone indicated the growing percentage of newbies > reading here, we might point out that the cleverly used command ->V3 > gives very different results for different states of system flags ... I know, I know ... I did'nt mention this in the silent hope that JKH will not notice the pitfalls :-) Please have also a look at the elegant solutions of Virgil and Jonathan in the 2nd challenge on the sequences defined by f(n+2)=f(n)+i*f(n+1). I constructed them for one reason only. People like CC which have a pretty good intuition should realize how important it is to pay the strongest attention to the convergence of the ratio of consecutive terms *before* starting to compute the limit itself. That Joe's ratio sequences are convergent for positive input is a mere windfall which cannot be passed over with a hand-waving :-) ==== > I know, I know ... I did'nt mention this in the silent hope that JKH > will not notice the pitfalls :-) Actually, I was delighted by your use of ->V3, since MC's assume default flag settings *and* are NOT intended for mission-critical software development for things like designing space shuttles, nuclear reactors, or weapons of mass destruction. Therefore, John's point is very important: Newbies, do not try this at work! -Joe- ==== > Al, I have both volumes, but I confess I have not progressed very far with Vol I > (let alone Vol II). There are some mistakes in the manual, but I think they Some mistakes? Actually more a hundred misprints, BUT as you said, they are quite easy to detect from the context. There is only one error in the actual formula manipulations but I can't recall at the moment. Didn't find it with Google :-( PS: The books are good > are usually quite obvious - this doesn't excuse the errors, but you could > always note them and send them back to GU (that's GreatUnpublished, or > Gilbert Urroz - or both!). The flag settings are a bit frustrating, it's true. There should really be > a statement at the beginning of a section to state the modes/flags for the > examples. I think it is done in some places. Anyway, I think the books are still good value for money. The reader required for the electronic copy is Adobe Acrobat. > ==== > I have 4 NiMH batteries I use for my 48GX. I numbered them so I know > which one I need to keep out of the next rotation. I haven't seen the > quick warning-to-shutdown time reported by Peter. I do have to keep a > spare set of alkalines around as suggested. That's usually only a > problem when traveling (batteries alway choose a bad time to die). Yes, keep a spare of alkalines very close to your calc, the low bat warning gives you some nanoseconds to trade. I cycle the AAA NiMH using letters: SHI, HIT, ITS, TSH ;-) ==== > double quote before the words Type data... > A typo, perhaps? My INMENU looks exactly the same as your posted program, and it runs without problems. Sometimes a mistake (like a missing delimiter) further down the program can highlight the string as a syntax error - the parser sometimes chooses innocent victims. :-) Bill ==== Are you downloading it using Kermit? (if so try first setting translation mode via 3 TRANSIO) Are you manually typing it? (sorry I can't help here). Are you copying and pasting it into an emulator? (it then needs translation via %3 xTRANSIO KINVISLF in SysRPL) It's so short that I'd try typing manually, taking care about the special characters, including the right-arrow in ->HEADER (or use the built-in command CATalog) [r->] [OFF] . ==== > > How do u solve a system of linear equations on the HP49G? I don't > > understand the entry of the coefficients through matrices. > > EX. > > -3X+6Y=4 > > 2X+Y=4 > > ( I know the answer to this is obvious but it is just an example!) > > Thanxs in Advance > > CID > > Thanxs Everyone I was able to try all of your solutions and find one > that was quick and easy! > > THANXS again!! > CID With pleasure, CID! BTW, which one was quick and easy? Greetings, > Nick. Hey Nick! My 2 favorites were your LInsolve one with the matrix and Markus's program (the one he said I should download) Thanxs again! CID ==== My first UserRPL program (which I'm going to post here for your kind >comments later :) tries to fill a result matrix on its run. >The problem is that I would like the first column of the matrix >contain the descriptions of the rows, like: [ [ 'Observations' 19.3456 23.4566 45.67 ] > [ 'Refraction ' 0.0039 0.0039 0.0039] ] (so that the results matrix could be transferred to a PC, and then get >pretty-printed somehow, with decriptive comments). Unfortunately, it seems like both 49g and 48gx don't allow strings >being matrix cell's contents. Is there any way to work around this? Tag the numbers in the first column instead? Enter: :Observations:19.3456 23.4566 45.67 :Refraction: 0.0039 0.0039 0.0039 {2 3} ->ARRY to get: [ [ :Observations:19.3456 23.4566 45.67 ] [ :Refraction: 0.0039 0.0039 0.0039] ] You'll lose the tags as soon as the values are manipulated though but the technique is useful if you have a progrm that creates the matrix and can simply do an ARRY-> command, tag the first values and -ARRy back again. -- Bruce Horrocks Hampshire England bh@granby.demon.co.uk ==== Another long string (or any object) viewer: http://groups.google.com/groups?selm=3D6B55BA.476C4207%40miu.edu Although it's a longer program (mostly UserRPL, which annoys WR :) it has some advantages, in that it doesn't copy the string, so you can display a string which even already almost fills memory; it also starts displaying immediately, no matter how large the string, and it also displays non-strings, by virtue of automatic decompilation. This was actually my first HP48 series program, although full screen and scroll-back were added much later. [r->] [OFF] . ==== > Another long string (or any object) viewer: > http://groups.google.com/groups?selm=3D6B55BA.476C4207%40miu.edu > Although it's a longer program (mostly UserRPL, which annoys WR :) That's not true :-) I like UsrRPL. I carefully studied some of your programs and those of JKH before I dared to post here. And COMPOSE was entirely programmed in UsrRPL before Raymond started to translate it into SysRPL. Ask him, 5000 bytes UsrRPL :-) I remember that JKH often underlined how important it may be to avoid local variables to fasten the program. I always tried to find out who are the most experienced experts, looked with deep respect on these (one of these are you) and only then tried to find my own way. There are others who believe that the art of programming was put them into the cradle. Maybe I'm a bit old-fashioned, but this was my way... - Wolfgang ==== ÂX > 'ddx(A+B+C)+T=0' > With A, B, C that are constants for the HP49 but in my mind are functions > and I've not explicitly declared their dependency from X to have a clearer > notation. > If I execute 'A=0' SUBST I have the ddx(A+B+C) automatically evaluated and > so the result is 'T=0' which in fact is correct but it is not what I have in > mind! :o) X What happens with 'ddx(A(X)+B(X)+C(X))+T(X)=0' ??? ==== If I understand you right, you wish to have SUBST do the substitution but leave the expression in the form d/dx(B+C)=T, and only when using EVAL or EXPAND the expression shoulf turn to T=0. Using DERIV statt d works almost the way you would like. Enter DERIV(A+B+C,X)=T then A=0 and then SUBST. This will return DERIV(0+B+C,X)=T. But I don't know how this could be turned to DERIV(B+C,X)=T. I wouldn't like however to change SUBST so that it works the way you describe. Using A(X) for something the depends on X makes things clearer (to me). Greetings, Nick. > I write to point your attention to a behaviour of the SUBST command which > IMHO could be improved. > Executing this command on an differentiated argument automatically call > the EVAL command - I think so - and this can be a bit fastidious in some > cases. > I'll make an example to explain better my POV. I've the equation: > 'ddx(A+B+C)+T=0' > With A, B, C that are constants for the HP49 but in my mind are functions > and I've not explicitly declared their dependency from X to have a clearer > notation. > If I execute 'A=0' SUBST I have the ddx(A+B+C) automatically evaluated and > so the result is 'T=0' which in fact is correct but it is not what I have in > mind! :o) > So there's a way to operate SUBST without calling EVAL? > Maybe it could be modified in future ROMs? > What do you think about this? Kickaha ==== Addresses only (no functional explanation): http://www.hpcalc.org/hp49/programming/entries/xref4849.zip http://www.hpcalc.org/details.php?id=3248 http://www.hpcalc.org/viewzip.php?id=3248&file=XREF49.TXT http://www.hpcalc.org/viewzip.php?id=3248&file=XREF48.TXT http://www.hpcalc.org/viewzip.php?id=3248&file=XREFAZ.TXT A very condensed function reference: Plain text: http://www.hpcalc.org/hp48/programming/entries/ent_srt.zip http://www.hpcalc.org/details.php?id=1782 PDF: http://www.hpcalc.org/hp48/programming/entries/ent_srta.zip http://www.hpcalc.org/details.php?id=1783 [r->] [OFF] . ==== is there anybody who can help me how I can transfer a text file (like a word document) from my PC to the HP 40g. Please give me a link to a program which can transfer these files. (IÇve got the program NOTECARD to convert text files into HP 48 format to get .CRD files .9a but I donÇt know if it's the correct way for my HP 40g) And also give me a short instruction please ;o) thanks to all (and excuse me for my bad English please) Bye ==== X > Alternatively, change a string into an ID using $>ID > (and then tag it with a port number). > X You mean the (Nick's normal) Hack Library command: S~N :-D ==== Cynox pages: HP49G & ital./span./engl./ Users Manual + PC-Interfacecable, It's this week in Europa > it will be available again May or June this year, > is this just for Europe? > in USA the price for 49G is going crazy....and no one said > it will be produced again soon...... > anthony > thx....! : ) ==== > Where on the web can I find the plug-in ROM and RAM cartridges > for my 48GX? You mean RAM cards (and/or application cards). The following chart is out of date, but some of the vendors (and some stock) still exist: http://www.hpcalc.org/buying.php RAM cards for the PC emulator are still plentiful, however :) [r->] [OFF] . ==== Whoever design the HP49 keys should hide his head with deep shame for they are a complete failure. When you buy an HP calculator, you expect quality, especially for $180. I don't know it enough yet to comment on programming, but it is not quality hardware. Caesar Garcia ==== > Whoever design the HP49 keys should hide his head with deep shame for > they are a complete failure. When you buy an HP calculator, you expect > quality, especially for $180. I don't know it enough yet to comment on > programming, but it is not quality hardware. Actually, it's more that HP pointy haired management should hang their heads in shame. The designer was probably given a stupidly low budget to work with, and so had to make the product conform within that budget. Engineers are often constrained by clueless non technical management in this way. I'd hope the money they saved building that ridiculous keyboard was well and truely blown in warranty replacements for units where the paint wore off in months, or even units like mine that arrived with pre-worn paint from poor quality control...They replaced mine *twice* due to flaking paint, or incomplete painting of the keys...Now it's flaking off again, but of course, it's out of warranty. ==== Another thing to check is to make sure you have working serial ports, and that you are trying to connect to the correct one. This problem had me going for a while the first time i tried to connect my 48 to the PC. Jim > I am new to this process and i'm having no luck getting my hp connected to > my pc. I get the calculator in server mode but the connectivity program > refuses to recognize the connection. I'm using Windows ME. Any suggestions > for a novice? ==== David Smith skrev i en meddelelse > I typed your expression into the Equation Writer, selected (or highlighted) > the entire expression and hit the SIMPLIFY key (F6) and got 15625Y^16*X^20. > Is that what you are trying to get? I did the same thing, but I get a ! SIMPLIFY Error: Bad Argument Type... So I can understand why drunken master asks the question :-) Martin J ==== Here's a mini-challenge for System RPL programmers! (Mini for the experts, midi for the enthusiasts, maxi for the amateurs, fuhgeddaboudit for the wannabes.) Write a SRPL program that traverses all of main memory (including directories, subdirectories, etc), finds all programs with << >> delimiters, and inserts Author: XYZ DROP after the opening <<, if those two objects are not there already. This process will be referred to as author stamping. Special rules: (1) The author stamp's string may have any contents you wish, but the author stamp must be exactly two objects: a string followed by the User RPL DROP command. (2) The program must not modify any other object in memory in any way. (3) The program, when run repeatedly, must not modify programs that have already been author stamped. (4) The program must reside in main RAM but it must run correctly no matter what directory it's in. (5) The program must still work even if the user renames it. That last one is the real challenge: nameless recursion. Have fun! Neither despair nor sneeze, for the task is neither impossible nor trivial. The winning entry will be the most elegant solution, as agreed upon by all those who submit an entry. Happy Programming! -Joe- EQU joehorn@holyjoe.net -- Theoden: I know what it is you want of me, but I will not bring further death to my people. I will not risk open war. Aragorn: Open war is upon you, whether you would risk it or not. [from the movie Lord of the Rings: The Two Towers] Aragorn: You have skill with a blade. Eowyn: Women in this country learned long ago that those without swords can still die upon them. [ibid] ==== It's a periodic thing... occasionally a hot item flares up and the flames leap (a bit like solar events). Right now, I think it's being acerbated by the global, geo-political state of affairs and the demise of ACO finally seeping in--making us a bit grumpy. Greg S > Is it time for Silly Season? At least four of our senior, articulate users are flaming away at each > other over topics that seem, at least at this remove, a bit vapourous. Since it appears to be global, I assume it wasn't terrorists dropping > Nasty Pills into the water supply. Cosmic rays, perhaps? Bill ==== I'd like to establish a infrared connection between my HP onmnibook 6100 laptop with integrated infrared and my HP-48G calculator. Please answer a couple of questions: - how must I configure my laptop ( port settings etc ) ? - which transferparameters should I set on my HP-48G ? - which applications should I use on my laptop to establish a connection ? Pieter R. ==== Is there a command or program that will display the bytes used by a directory? The 49's Filer can do this, but not conveniently. I was thinking of something like FASTD for the HP48. If not, the tiny program below returns the bytes used by whatever directory it's run in - it should be in the Home dir or assigned to a key. The sizes agree with Filer, although if you use it for the Home dir, the result will be slightly undersize because it doesn't access the hidden dir. %%HP: T(3)A(R)F(.); << 0 VARS DUP SIZE 1 SWAP START DUP HEAD BYTES SWAP DROP ROT + SWAP TAIL NEXT DROP 6.5 + Seasons Greetings to all - Bill ==== I have been using HP RPN calculators for the past 30 years and do not want to switch to algebraic mode. I recently purchased an HP 49G calculator and the instruction book is written almost entirely for algebraic users. I have figured out most of what I need for RPN use. However, I have a question about matrix writer that I hope someone can answer. In algebraic mode, I can enter fractions into a matrix, like 2/3. In RPN mode I have not found a way to do this. To enter 2/3 I have to enter 0.6666666 etc. Does anyone know how (or if) I can enter fractions into a matrix when I am working in RPN mode? Jim Leflar Agilent Technologies (Ex HP Engineer) ==== In the matrixwriter, assuming exact mode is set, you can enter 2/3 as an algebraic, with the tick marks, '2/3' ENTER, or in RPN steps as 2 3 / ENTER. In both algebraic and RPN entry formats, you can alos type in several matrix elements followed by a single ENTER command. ==== Use the little tic marks: RS O (little red tic mark comes up) then enter your fraction '1/2' or '3/4' etc. ==== It's quite easy to build a matrix from the stack. For instance [[ 6 2/3 4 ] 3 1 5^3.2]] can be made from the stack with RPN as follows; 6 2 3 / 4 3 1 5 3.2 ^ { 2 3 } { 2 3 } defines the { rows colums } Matrix elements can also be variables in the same way. ==== You can program a keyboard program to start it automaticaly or in the bought version there is a hot key combo that starts it also. The bought version is also much more integrated to the operating system. They did a nice job. On Mon, 23 Dec 2002 19:35:03 -0800, slimey_limey ==== My suggestion would be to just us ebay or Yahoo or similar site... ==== How do I get the 49G to scale graphs correctly? The little markers on the graph window seem fixed. For example, if the left boundry on the graph is 6.5, it is still the same as the default of 4.5 tabs. It doesn't scale the tabs correctly so you can easily tell where your points are at by looking at it. Anyone know how to unselect this mode? ==== Im not positve I understand your question, but if you select 2D/3D setup screen, then unselect the PIXELS check box, you can then enter tic marks both vertical and horizontal in user units rather than pixels. You can also ZOOM to ZDEC(imal) which makes the pixels line up on even numbers!