A66

Hi Samuel!
Already doing that on my spare time. It is fun :)
But battery consumption is less fun, if the 49 must always be ON to
serve. Is there any adapter that can be used instead of batteries? :/
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138978
There is kalc, a RPN calculator for PC's that supports RPL like in the
HP's. It is not a simulator, however, just a program that imitates
some aspects of the HP calculators.
Get it at http://kalc.sourceforge.net
--
Passionate hatred can give meaning and purpose to an empty life.
                -- Eric Hoffer
Eduardo M Kalinowski
ekalin@bol.com.br -- **Novo e-mail** **New e-mail**
http://move.to/hpkb
From ???@??? Fri Jan 01 00:00:00 1999
Reply-To: richard_helps@byu.edu
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138982
For an opposing viewpoint on the merger see Bob cringely's column at
http://www.pbs.org/cringely/pulpit/pulpit20010906.html
Carlos Marangon wrote:
--
C. Richard G. Helps
Brigham Young University
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138953
Hi Ville!
Your program is fine but there is another easier way. Just do:
XQ PROPFRAC
Same results, works also for symbolics.
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138951
As I recall, grad(f(x,y,z)) = df/dx + df/dy + df/dz [all partials]. 
If it isn't, back to square one.
So, put this expression on the stack and make a few copies of it. 
Purge x, y and z from the variable list.  Then you just calculate the
three derivatives and add.
For example, '1 / (X^2 + Y^2 + Z^2)' on line 1.  Then put 'X' on line
1.  Punch the curved d key and you've got df/dx.  Do the same for Y
and Z and add them.
You could probably do all this in one big humungous algebraic
expression using the Equation Editor.
Simple enough?  To calculate them for specific values of x, y and z,
you then store those values in the variables x, y and z, and use some
combination of
EVAL and num<--- .
There should be a way of making gradient a function (actually an
operator)
which would work on any scalar function of a 3-dimensional vector.
HTTH.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138959
Hi Ala! (I guess this is your name?)
Just put on the stack:
          1
2:  --------------         /*Your expression*/
     X^2+Y^2+Z^2
1: [ 'X' 'Y' 'Z' ]         /*Vector of variables*/
Then use the command DERIV (In menu CALC/DERIV)
Hope it helped.
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
NNTP-Posting-Host: dutw215.wbmt.tudelft.nl
Mime-Version: 1.0
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138965
Nick Karagiaouroglou wrote:
All I can say is:
Don't drink and DERIVE
--
This message was written entirely with recycled electrons
Pivo
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138968
Hi Dan!
Last operation add them is not correct. If we add the partial
derivatives, then we get a scalar. But the gradient is a vector, the
components of which are the partial derivatives. So instead of adding
them, we must use something like:
Or put the function of X,Y,Z on the stack, put [ 'X' 'Y' 'Z' ] on the
stack, and then use DERIV. This also gives you the gradient and saves
you from typing too much. :)
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138969
Unfortunately I can't DERIVE, with or without drinking.
No DERIVEing licence, you see...
And at this age I shouldn't even think of it. ;-)
Greetings,
nick.
From ???@??? Fri Jan 01 00:00:00 1999
Reply-To: iilias@ODDauth.gr
NNTP-Posting-Host: millennium-ppp36.ccf.auth.gr
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138979
ˆn 14 Sep 2001 03:50:05 -0700,  nk@imos-consulting.com (Nick
Karagiaouroglou) wrote:
Can we have a variation for hp48 too, please?
--
Zorz, http://users.auth.gr/iilias
No user-serviceable parts inside.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138980
After sending in my response in the wee hours, I looked this up and
sure
enough, grad is a vector.  Specifically, the vector is [df/dx df/dy
df/dz].  I erred by adding them.
The problem is, I haven't found any way to make a vector out of
algebraics.  My HP48G will not accept ['X' 'Y' 'Y'] in any size, shape
or form.  I tried
entering it on the command line, no go.  I tried putting 'X' 'Y' 'Y'
and {1 3}
matrix
editor, same result.  Needless to say, it wouldn't accept taking the
three partials '-(2*X/(X^2 + Y^2 + Z^2)' '-(2*Y ...) ' '-(2*Z ... )'.
So I think we're stuck.  Is there a flag to set?
I'm stumped.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138948
Interesting that another Dan should widen the comparison to the 15C
and 48G.
After many years of loving a 10C and 15C, and recently getting a 48G
which I
found cumbersome, the 10C and 15C both went.  I've replaced them with
a 21, 34C and 32SII.  The 21 is VERY nice, the 34C is to be learned
another day, and the 32SII is impressing me more and more as I learn
how to use it.
Now, I've finally started studying the 48G manual in detail and am
coming to
understand that each calculator has its strong points.  Yes, the 48G
has a menu structure and can be very cumbersome.  However, its so
incredibly powerful.  The 32SII does much less, but its very easy to
use.  That's the difference.  I'm starting to think that if I still
had the 15C, I might be using it less and
less and the 48G more and more.  One of the strong points I remember
about the
15C was complex numbers.  Well, its an absolute snap with the 48G. 
And I liked
the 15C for matrices.  One minute with the 48G matrix writer and
that's the end of using 15C for matrices.
Its surprising how much the 32SII does considering.
My 2 cents worth.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138946
Hi,
if ure doing aerospace engineering and the prof says that u are
allowed to use
the HP49g in the test ure thinking about putting not only
preprogrammed functions
inside but also some text and, more interesting, a big part of the
diagrams u
need to know.
Since 1GB in microdrive are almost the same like 1 mb of HP memory in
money terms
and u can use the microdrive elsewhere too this is a logical decision
: )
In my opinion the biggest problem will be the memory allocation for
talking to a 1000 times bigger data space.
I will write now HP and IBM and lets see what they are saying ....
Etustarr
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138956
Good idea to do so, 'cause I'm really cought in the prison of growing
entropy. My working room is the best evidence for this ;-) So perhaps
your robot could be programmed to keep the place clean (and safe for
other humans ;-) )
And also to kick me when I start leaving things on the floor to pick
them up later. Give it a big shoe for that ;-)
Oh, I only assumed that this is your element: Connect everything to
anything. ;-)
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138957
Reboot the whole house, hey?
Calculate the necessary power for keeping a certain temperature
inside, while having certain conditions outside. Or simply for the fun
of it. (Until your fridge turns to a microwave, that is. ;-) )
Or one that could really wake me up after hours of trying this and
that in the night. My clock is doing a strike because it feels
neglected. I don't hear it anymore in the morning. ;-)
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138958
The HP49g uses bank switching, as far as I know. By the way, how many
banks are possible? Does anybody know?
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
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Xref: newsmst01.news.prodigy.com comp.sys.hp48:138971
Very unlikely you can -- the MD draws 20mA in standby, 250mA
upon spinup -- this will shorten the life of the AAA bats substancially.
Bye,
    Detlef
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138961
Hi Mike!
You can use the down arrow or EDIT to put the results list on the
editing line. Then use the arrow keys to navigate across the
solutions.
see each one separately. If the solutions are to big themselves, then
you can press down arrow, having a solution on stack level 1. This
will take the solution to the quation writer, which is very handy for
viewing such things. In the Equation writer you can use the arrow keys
to navigate.
Hope it helped and happy viewing,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138949
This is only anecdotal, but HP's grip on the scientific community is
very
strong.  Yes, K-12 (where I taught math) prefers TI.  However, when I
worked as
patent attorney at the Naval Research Laboratory, I found the
scientists almost unanimously preferring HP (and Apple, alas).  Then,
grad school in Electrical Engineering.  So much HP instrumentation for
microwaves.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138962
Hi Thomas!
I don't remember if the 48GX has this capability built-in. Anyway, go to
http://www.hpcalc.org/hp48/math/numeric/ perhaps also
http://www.hpcalc.org/hp48/math/symbolic/
There are many interpolation programs there.
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138963
Hi Thomas!
I don't remember if the 48GX has this capability built-in. Anyway, go to
http://www.hpcalc.org/hp48/math/numeric/ perhaps also
http://www.hpcalc.org/hp48/math/symbolic/
There are many interpolation programs there.
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138972
Which sort of interpolation do you need? Polynomial or others? Some
are built in the HP48 (linear, Power ...) Read the statistics chapter
in the manual. Joe has written a cool (very small for what it does)
exact polynomial interpolation programm. If you need a least square
fit you'll find other programs at hpcalc.org as mentioned. I don't
know if one of them is especially interesting/good?
Greetings from Cologne
Peter
-- 
Great HP48/49 links:
http://www.engr.uvic.ca/~aschoorl/faq/
http://www.hpcalc.org
to find *old* postings search:
http://groups.google.com/advanced_group_search
From ???@??? Fri Jan 01 00:00:00 1999
Newsgroups: comp.sys.hp48
Subject: Re: Interpolation on 48GXf?
Date: Fri, 14 Sep 2001 15:56:27 -0400
Reply-To: hclimer@cecasun.utc.edu
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Xref: newsmst01.news.prodigy.com comp.sys.hp48:138976
  I think he means table interpolation. Steam tables
Freon,Hydrogen,Nitrogen,,Air,etc.  These types of tables can be found
at the end of most engineering thermodynamics texts.
There is a good two way interpolation program for the HP48. I forgot
what the name is just now. I does linear one way and two way
interpolations. It does higher order polynomial interpolation too.
Get it a HPCALC.ORG
 I used it for well draw down calculations for a course in Hydrology I
took last spring.
Harold A. Climer
Physics/Astronomy Lab Instructor
U. Tennessee At Chattanooga
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138970
In a HP48GX    ROM M , entering   Joe Horns prog :
 400 times faster ?    from Horn 
gives syntax error    #1+
:: CK1&Dispatch # 5h
  :: INNERCOMP 1LAMBIND 1GETLAM
    #1+_ONE_DO 1GETLAM ROLL # 0h INDEX@
      WHILE
          ITE ROTDROPSWAP SWAPDROP
        ;
      REPEAT ROT2DROP UNROLL
    LOOP 1GETABND {}N
  ;
;
=====================
:: VERSTRING EIGHT LAST$ ;
this reduces to 3 items on stk and i lose  the
; at end .
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138964
My (relatively early) HP49 had a very hard keyboard at first. The problem
disappeared by itself after a few weeks of use, when your hands will have
become much stronger physically (and the keys will get softer, too). After
two years of use, I still have a preference for the regular, HP-style
keyboard (that of the HP48 and current financial models), which, to me,
seems to be a little more reliable for very quick data entry. However, the
new HP49 layout and software certainly does more than compensate the
(small) difference in quality with the HP48's keyboard.
David Haguenauer
http://zap.to/hsimpson
From ???@??? Fri Jan 01 00:00:00 1999
NNTP-Posting-Host: van132574-1.gw.connect.com.au
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138945
You could download a copy of GDREAM a greyscale picture viewer that 
comes
with a Cindy Crawford fac that would be hard to beat.
news:2c0e721.0109131759.1d2bef5a@posting.google.com...
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138960
Hi Stephen!
Is there also any grey scale picture of Clint Eastwood? 
=|:-|´ 
Greetings,
Nick.
From ???@??? Fri Jan 01 00:00:00 1999
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Xref: newsmst01.news.prodigy.com comp.sys.hp48:138944
Go http://www.hpcalc.org/hp48/pc/programming/ and take a look at
hp48gcc.
From ???@??? Fri Jan 01 00:00:00 1999
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Xref: newsmst01.news.prodigy.com comp.sys.hp48:138984
A nice sight in my mail today. I sent my rebate in Aug. 8th. Nice quick
service from HP.
From ???@??? Fri Jan 01 00:00:00 1999
NNTP-Posting-Host: dutw215.wbmt.tudelft.nl
Mime-Version: 1.0
Xref: newsmst01.news.prodigy.com comp.lang.forth:63876 comp.sys.hp48:138947
Steen S. Schmidt wrote:
Oh?
--
This message was written entirely with recycled electrons
Pivo
From ???@??? Fri Jan 01 00:00:00 1999
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Xref: newsmst01.news.prodigy.com comp.lang.forth:63895 comp.sys.hp48:138966
Julian Fondren wrote:
Most are written in assembler to sqeeze out every cycle you can.  I use
assembler in my programs for display stuff and for specific small tasks
which have no sysrpl entry usually having to do with modifying existing
objects in tempob.  For everything else, I use systemrpl.  Code-space is
also a concern as you pointed out, but really not so much now as before
the HP49.  Having 512k to work with [must] seem like a luxury to HP49
programmers.  Try programming something useful on a machine with 32k of
ram... a quarter of it being required for temporary use by the OS and
applications!   (btw, it has been done... just not by me! ;-))
--
Aaron
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.lang.forth:63904 comp.sys.hp48:138975
(snip)
Oh, cool!  I've a problem with pdf documentation, so I couldn't read
much of HP's stuff (and it didn't seem very good anyway), but I'll
have to check it again and learn about SysRPL.  I've figured out how
to display SysRPL, but whenever I try to enter SysRPL (putting it in
the same way it displays) I get odd results.  How do you enter SysRPL
or ML?
 
OK, that's good.
 
(snip)
Oh, well, that's a little off. =)
 
(snip)
From ???@??? Fri Jan 01 00:00:00 1999
Lines: 6
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138983
is it possible to connect the HP48 to a USB port?  Is there some type of 
adapter that is sold or is there a third party connector out there.  Any
help in the matter would be appriciated.
-John Scheeser
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138950
As I am working through the 48G manual getting to know it, I'm
generally impressed.  However, the way it handles derivatives is
disappointing, unless
I'm missing something.
AFAIK, there's functions with built in derivatives and
anti-derivatives.  With
integration, there's symbolic integration and numeric integration. 
Symbolic
integration is limited to those functions with built in
anti-derivatives.  Thus, a symbolic integrand exp(-x) works fine, but
exp(-x^2) doesn't.  However,
there's also numeric integration which uses the Runga-Kutta method
(it's been 35 years, I forgot what that is) to integrate almost
anything including
exp(-x^2).
HOWEVER, when we get to differentiation, its all symbolic.  If it
can't find
the symbolic derivative on a table, you're SOL.  Come on, can't it
even do
d/dx (SIGN(x)) at x=0.1?  Nope.  It never heard of limits?
This is particularly disappointing because most Calculus classes study
limits
first, then Differential Calculus, and only then Integral Calculus.
Grumble.
Dan
Is there a program for adding this feature?
From ???@??? Fri Jan 01 00:00:00 1999
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Xref: newsmst01.news.prodigy.com comp.sys.hp48:138952
'EXP(-X^2)' does not have a closed form symbolic antiderivative.
The HP48G does not support limits, you should know that. If you had a 
HP48GX
you could load some third party programs like Erable and Alg48, but with 
the
G you do not have the memory for it.
You can explore some shortcuts; Change 'SIGN(X)' to 'X/ABS(X)', and the
HP48G will differentiate it. Then you can substitute back 'X=0.1', and 
press
EVAL. You do not need limits in this case.
You should have bought the HP49G, which does this. The TI89/92+ doesn't by
the way, so they wouldn't have brought you any closer to a solution.
Regards
Steen
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138955
It's only been 20 years, but I think Runge-Kutta is a way to numerically
solve differential equations..  The built-in numerical integration method
uses Romberg integration, by the way.  Search google for John H. Meyers'
article describing it in detail. (why can't we call you JHM, John, in 
analogy
to JYA, CdB et al.)
Werner Huysegoms
xwerner_huysegoms@my-deja.comx
(delete the leading and trailing x)
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138981
Well, now I know.
Basically, I'm disenchanted.  Back to who needs a calculator if its
so limited?  That's the way I felt about the HP-35!
Really, this is more a theory of knowledge concern.  I've taught
calculus on
the Community College level and I am very careful to stress that these
concepts apply to ANY function (with certain conditions), not just
functions we can name.  I teach the theory and point out that these
things can be calculated numerically.  Its easy to fall into the trap
of limiting the concepts to easily named functions.
I probably wouldn''t be so disappointed if the 48G didn't do strict
numeric integration.
 If you had a HP48GX
Limits is such a profound concept you can spend a lifetime meditating
on it.
Ok, maybe I'll trade up.  I got the HP48G to take the Praxis exam and
become a
teacher.  The 49G wasn't out then.
Thanks for the insight.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138985
*Sorry for the duplicate post.  I hit Alt <---, not Ctrl <----- *
As I was saying, Werner, could you help a little more with searching
for this
article?
I did find a nice discussion of Romberg integration in the
Encyclopedic Dictionery of Mathematics.
Maybe I will write my own routine for the 48G to take a numeric
derivative.
Dan
From ???@??? Fri Jan 01 00:00:00 1999
NNTP-Posting-Host: 212.198.168.90
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138967
Lo,
How do u start a xmodem server on an hp49,
plz give me a command because i cant get the key combo working ...
Thx in advance
Mat LOPEZ
--
Nobody is perfect
I am nobody
Therefor I am perfect
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138973
Please excuse my ignorance, and ignore my previous post. I've forgotten
about the XSERV command. Just type XSERV, and your 49 will go into the
Xmodem server mode (If you have a ROM later than 1.10)
Sorry about the incorrect information,
Sincerely,
Jason
news:9nti8g0bq6@enews3.newsguy.com...
beta
Anyway,
From ???@??? Fri Jan 01 00:00:00 1999
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138974
Hello,
If at all possible, I would recommend upgrading your 49G to the latest beta
ROM. I think the xmodem server is only implemented in ROM 19-4 (?). Anyway,
if you upgrade to 19-5, you can just press
Rightshift + Right Arrow to start the server.
I don't think early versions of the 49 ROM have an xmodem server, so
upgrading may be the only choice. Hopefully this helps a bit.
Sincerely,
Jason
news:9ntbvc$8n5$1@neon.noos.net...
From ???@??? Fri Jan 01 00:00:00 1999
NNTP-Posting-Host: 212.198.168.90
Xref: newsmst01.news.prodigy.com comp.sys.hp48:138977
NP about the wrong info, u gave what i was looking for, thx !
Mat LOPEZ
news:9ntigl02gal@enews1.newsguy.com...