HP48

circuit simulator
Hello, I am an Italian electrical engineering student, I would like to know if there is a circuit simulator program for the HP 50g, in addition to CSIM as Symbulator (http://paxm.org/symbulator) or Circuit4 (http://www.noatechnologies.com) for the TI-89. Greetings, Simone from Italy. ... 16 Jan 2008 12:31

matrix inversion roundoff error
I got a reminder as to how sensitive matrix inversion is to roundoff. I had a C program where I was using two different methods to form sets of normal equations which were then inverted to get 2X2 variance/covariance matrices (think along the lines of a least squares fit). One method was well established, and anot... 18 Jan 2008 00:33

ASCII transfer with Conn4x
Hi: I'm trying to upload some variables from my HP48 to HP4XDEV2, and have successfully done it binary, but I want to upload them in ASCII format so I can edit them. The HP4XDEV2 help says to " Start the HP Conn4x Connectivity application, and make the connection using the USB port. For ASCII file transfer, s... 16 Jan 2008 12:31

Calculator Programs
LOTS of calculator programs (many Java): Martindale's Calculators On-Line Center http://www.martindalecenter.com/Calculators2.html ... 15 Jan 2008 15:08

Conn4x language
Hello: I just installed conn4x from hp's web site, but it runs in portuguese, my computers regional setting, but i want it to run in english, my operating system language and preference, how can i do it? I looked at the registry key and for an ini file on the install folder but got nowhere. Thanks Best R... 20 Jan 2008 19:17

hpgcc arm doubles in memory
I've been playing around with hpgcc and after wondering why some of my unions were not behaving as I expected, I noticed something interesting about how doubles are stored in memory on the ARM. This may common knowledge, but it was new to me. As one would expect on a Little Endian machine, the 64 bit unsigned l... 14 Jan 2008 12:43

HHC2007 San Diego Conf Printed Proceedings Available For Download
Hi, The Printed Proceedings plus a handful of additional material (including some slide presentation files) from the HHC2007 HP Calculator Conference held last September is now available for download. For those interested, go to the conference web page at http://holyjoe.net/hhc2007/ and then halfway down the pag... 13 Jan 2008 12:54

Urroz Books: useable for 50g?
I have a 49g with which I am currently wending my way through the first of Gilberto Urroz' _Science and Engineering Mathematics with the HP 49G_ books. I don't currently own Vol. II. Because I'm experiencing some problems (apparently pretty well documented ones) with the 49G, I've been considering upgrading to ... 12 Jan 2008 22:08

Hpcalc Update?
As you probably know, hpcalc.org hasn't been updated since September, 2007. I searched this group for "hpcalc update" and couldn't see any discussions about it. Does anybody know when Eric will be posting new programs? Regards, Bill ... 17 Jan 2008 06:50

Waiting for a really good calculator
I used HP calculators for study (28s, 48sx) and for my job (48gx, 50g, 35s). I currently use the 35s (always in my bag) and the 48gx (always on my desk), having put apart the 50g (and thinking to sell it: i used it for two weeks......). Why? The reason is simple: it is full of useless features for me, in particul... 12 Jan 2008 04:24