A31 ==== I received 2MB Ram card from Cynox. Only one problem. I read the instructions. I first inserted card (that 6mm also) in slot 2, I switched 'ON' the ram card (good?) and switched on the calculator which showed INVALID CARD DATA. I then pressed purple arrow-key, pressed 'library' key, 'nxt' key and then 'PINIT'. Still after switching off and on calculator it showed INVALID CARD DATA again. normal? Is there a test to see whether calculator accepted the card? Now the second problem is: I want to write notes. ex as in a computer - text notes in calculator 128b memory (i have a HP128b ram card merged also in slot 1). but how do I write them in the 2Mb card ie write text and give the file a name? And also how do I afterwards open the file from the 2Mb ram to read it? I did not understand the leaflet given and neither the calculator manual. kgrima@dream.vol.net.mt ==== How many switches does the card have? If only one, is that the write protect switch? If so, make sure that you enable writing, or else PINIT will not initialize your card ports. Check the card battery as well. How many ports appear in the left-shift LIBRARY PORTS menu? (ports 2-17 are in the 2MB card in slot 2) Do you still have your user manual? (Chapter 28): My notes :2:MYNOTES STO Note that with port objects, you can not repeat STO to the exact same port and name, until you first PURGE previous contents, or else you'll get STO Error: Object In Use ==== Flash chips were guaranteed for. TI's response: The Flash devices we are using in our calculators are spec'd at 100,000 erase cycles. HP's response: ==== I remember reading that a long time ago somewhere as well. Does anyone know why there is a difference? Are the chips manufactured by a different company or ==== How do I get rid of the HLT message on the top of the screen of my HP49G. ==== Press the left shift key then the ON key. (note the word CONT on the key face which means CONTinue.) -- -Al Arduengo ------------ Those who do not understand UNIX are condemned to repeat it. -- Henry Spencer -- ==== ==== ==== How much memory was already used when my 48G+ (128k) was new? Now it only ==== I did a Memory Reset and now it has about 128 kB free. Next time I will read the User's Guide before asking something... / Per ==== About 3K (for display and other basic work areas). Have you checked left-shift LIBRARY PORTS :0: for stow-aways? Stack is CLEAR, of course? Do you either have a memory backup or not care what happens next? Then simultaneously press ON and A and F; then release. When it says Try To Recover Memory? first try Yes When things settle down, press VAR; got any variables left? Try MEM now. If you get some mess, and want to really wipe it clean, repeat ON+A+F, but answer No If stuff is still there after all this, you may have received a rare 48G+ with a Flash Memory chip, instead of RAM :) ==== Yes, nothing... does what? I get { 743.5 14 10218.5 } _after_ the memory reset. Sorry I didn't ==== Could anyone please explain how one might go about solving the ==== The easiest is to use the EQW. I did this: 1. You have the equation 'sqrt(2*X+1)+sqrt(2*X+6)=5' on the stack. term on the left side. ==== The equation doesn't have any real-valued roots so you have to put the calculator in complex mode. E.g. press mode, then F3 (enters the CAS-menu) and make sure there is a tick in front of Complex. Press F6 (Ok) twice. Using RPN-mode the equation can be solved as follows: 'SQ(2*X+1)+SQ(2*X+6)=5' 'X' SOLVE result (in exact mode) is {'X=-((7+i*sqrt(15))/4)', 'X=-(7-i*sqrt(15))/4)'} I.e. the roots of the equation are -7/4 + i*sqrt(15)/4 and -7/4 - ==== Numerically: 3: (SQRT(2*x+1)) + (SQRT(2*x+6)) = 5 2: x ==== ==== Dear Jesper, If you insert x=3/2 into the equation above, you'll be convinced of the fact that there IS a real solution ;-) The fact that any calculator doesn't find straightforward a real solution is no indication for the nonexistence of it. SCNR, ------------------------------------------------------------------------- ==== Errr, Jesper I think you are talking about a different equation here. ==== The equation about which Jesper talked, was not the equation about which jason talked. Jason`s thing has a real root. Jesper`s has two ==== Your method is a little bit dangerous sometimes. (SQ can remove negative signs). So I suggest always back substituting the found solutions in the original equaltions and filter out roots that are no roots. Try your method on: ==== ==== Nick, all your postings on This Equation could have makes me a bit nervous if you treat this NG as a forum for self-entertainement. I cannot help to repeat what was upset at first, but later we became even friends ==== Still, just about every response here is _MUCH_ more useful than the average response on the TI discussions groups. (Except for posts by Sincerely, ==== As Nick pointed out my posting was the correct answer to the wrong question. :) I'm terrible sorry for caused confusion. Until the next time I will upgrade my parser to read the entire SQRT and not stop at SQ. It's especially silly since I write sqrt in my answer and there a really mean sqrt, not sq. Regars Jesper ==== ==== ==== ==== ==== ==== You can lose a computer in more ways than merely misplacing it! But, let ==== ==== ==== ==== OK, I'll get organized in future. I could first wait for every you allow this to me...;-) The only thing that I don't understand is, how did you find out, that I entertain myself in this news group? Kind of telepathy? And if I do so, does this mean that I am using this medium the wrong way? Should I really become the serious face that never finds a reason to smile, only to show that I don't misuse the medium? ==== Nick is really _very_ concerned if he goes to your killfile. Please ==== ==== ==== ==== The 30S is a very capable calculator for the price. There are a few mnor problems with it, but it does solve quadratics and do stats. For 15$ there isn't a more capable calc. I know because I've written another comparison of ==== as for that, my HP32SII can do matrices when you will make the program ==== The standard baud rate of NMEA speaking GPS units is 4800. The output is a line of text terminated by a cr/lf. The cited URL is a good source for NMEA/GPS information. Vic -- ________________________________________________________ Victor Fraenckel - The Windman vfraenc1@nycap.rr.com KC2GUI www.windsway.com Home of the WindReader Electronic Theodolite Read the WIND | | Although I have no experience with this topic I think it should be possible. | As far as I remember most GPS receiver use the NMEA protocol standard, ==== I've owned my HP48GX for two years, and I think it's great. Recently, I downloaded the HP49 emulator and played around with that a little. I was surprised at how different it was. I know I could never really get a feel for the 49 until I actually had one in my hands, though. I just wanted to ask the people out there who own both calculators what the biggest differences they found were and in what areas was the 49 superior or ==== ==== ==== ==== ==== Key-touch feeling is indeed very different on the 48 and 49. For a piano player easily to compare. The 48 key-touch is similar to the Steinway grand piano, hard and precise. The 49 key-touch is soft and smooth, like on a B232sendorfer. After operating my 49 (Indonesia) for nearly 5000 (!) hours, I can't notice even a trace of a defect, except that the imprint on some keys is gone, e.g., the backspace key has now the pretty grey colour of rubber. Returning occasionally to my 48, I must say that the 49 key-touch seems to fit my fingers better than the hard 48-touch, now I even hear the noise of these keys which I formerly didn't notice. And the Key-click from the 49 Modes menu imitates it only badly :) Key-touch is one, but not the main difference between these calculators. The 49 is undoubtly essentially more powerful than the 48. But at the same time, you've to learn a lot more to operate it properly. One point is the high number of possible flag settings and operating modes. The 48 is to a higher degree selfexplaining than is the 49. Hence, I cannot imagine to operate the 49 efficiently without additional tools like Keyman, Emacs, OT49 etc, and without reading this NG from time to time. The 48 equation-library is ported but not in an optimal manner. On the other hand, the 49 has tools like the Filer or a Decompiler/Compiler which are missing on the 48 and whose installation demands additional RAM cards. Moreover, the new 49-tools will still be improved in future ROMs. In the power/price relation the HP49 is clearly the winner. ==== ==== ==== ==== Guess what? My ID022... 49G didn't come with a nameplate! :( ==== ==== is this nameplate separate from the calculator itself? or is it just a rectangular panel on the back of the calculator, cause thats all mine has. ====