HP Forum Archive 13

[ Return to Index | Top of Index ]

49G+ & 48GII Message #1 Posted by CalcKidd on 28 Oct 2003, 5:58 p.m. My 49G+ accepts a 256MB SD card just fine (FYI). Just got 48GII today, though have not opened it. Don' t think I ever will either... just got it to have, not to use. 49G+ will be #1 calc for now, since 48GII is a step down. Yeah, I know... crazy. However, I still like to use my 41CX - for nostalgic sake.

HP49G+ is TRASH, HP41 is best !!! Message #2 Posted by Linda on 30 Oct 2003, 9:39 a.m., in response to message #1 by CalcKidd HP-41 is best, f... the rest .... HP49G+ is TRASH, garbage !!! and HP48GII is even worse! Why using such calculators ? Use subnotebook with Mathematica, Maple, Origin, Matlab, Excel. It is 1000 times faster on my 1.2GHz laptop than HP49G+, there is much more functionality, human interface is more comfortable and easy. 3D graphics are great at 768x1024, not that "funny" dot LCD of a HP49G+ ... For calculator tasks and playing, hacking etc., take HP-41. It is the best calc ever built! So, take notebook with good sofware plus HP-41 and throw away the new garbage ...

Re: HP49G+ is TRASH, HP41 is best !!! Message #3 Posted by John Limpert on 30 Oct 2003, 3:04 p.m., in response to message #2 by Linda Quote: Use subnotebook with Mathematica, Maple, Origin, Matlab, Excel. That sounds nice. The only problem is the cost. An expensive subnotebook computer and one or more very expensive software packages. I'm not thrilled about the HP-41. Mine died a few months ago. They seem to have some long-term reliability problems, judging from what I've read.

Re: HP49G+ is TRASH, HP41 is best !!! Message #4 Posted by Raymond Del Tondo on 30 Oct 2003, 5:24 p.m., in response to message #3 by John Limpert If your HP-41 died only some months ago, I don't think it had a 'long-term reliability problem'. Remember that your HP-41 must be at least 14 years old, and depending on how intensively you used it, the machine may have done a good job for you. Raymond

Re: HP49G+ is TRASH, HP41 is best !!! Message #5 Posted by John Limpert on 30 Oct 2003, 11:20 p.m., in response to message #4 by Raymond Del Tondo It (HP-41C) must have been 20+ years old when it died. I was disappointed because it was the first time a HP calculator has failed on me, and I've been buying them since the HP-35. I sold all of my HP LED calculators many years ago, so maybe I've just been lucky.

Re: HP49G+ is TRASH, HP41 is best !!! Message #6 Posted by Bill Wiese on 31 Oct 2003, 1:42 p.m., in response to message #2 by Linda Perhaps I wouldn't put it quite so severely, but I do have a fondness for the HP41s and HP42S that goes beyond reason. Most all of us here prob. have PCs or laptop PCs as well. If I need to do math requiring a 48, I'm better off using something like Matlab. The 48 is not really, to me, a good "playing with numbers" calculator - esp w/o a standard 4-level XYZT+L stack and large ENTER key. 32S is useful however, and I still like the Woodstock keyboard layout & formfactor too. Glad I have some calcs stored away for the future ;) Bill Wiese San Jose, CA

Re: HP49G+ is TRASH, HP41 is best !!! Message #7 Posted by Raymond Del Tondo on 31 Oct 2003, 4:50 p.m., in response to message #6 by Bill Wiese BTW: The real HP-48 does indeed have a large ENTER key, and with an HP-41CV emulator, it even has LASTx ;-) The keyboard ergonomics on the HP-48 are the same as on the 42S and 32S. And even better, you can see more than only one number simultanously. However, for just adding a few numbers I mostly take an HP-41, of course. Raymond

mathematica on a pda - even better Message #8 Posted by harryb on 7 Nov 2003, 5:44 a.m., in response to message #7 by Raymond Del Tondo here here! the 41 was the best of the best. mathematica on a laptop (student version costs about the same as a 49g+) is the way to go... you just need to spend a few hours learning the ropes.. BUT ... you know what I would love to see... Mathematica for a PDA OS! Now that would kick the ass out of any calculator. You basically choose the hardware platform of your choice and just load mathematica on it.. Rock on! imagine writing the equations on the screen with a stylus... colour 3d graphics... total symbolic math... rearranging equations on the fly without the need to type and then visualizing the effects... Stephen (W.) are you listening!!!!! Here's a whole new income stream/market for you man... Give "A new kind of science" a break and get your codecutters to port a scaled down version of mathematica so that us students can have a break!

RPN on an RPL machine Message #9 Posted by bill platt on 7 Nov 2003, 9:52 a.m., in response to message #7 by Raymond Del Tondo Hi Raymond, A while back I got a great little tiny user RPL routine here on the forum, which makes lastx available for use on the RPL stack! It works almost exactly like the RPN lastx--- (there are some subtle differences but for most computational work ii is functionally identical): << DEPTH -> d << LASTARG DEPTH d - ROLLD LASTARG 1 - DROPN DUP DROP >> >> I put it onto USER KEY "alpha enter" and so it is almost the same keystrokes as a 10c series! (You just ahve to remember to turn alpha off before hitting enter, if you had been writing text, or you will both enter your TEXT, [into level 2] and LASTx [into level 1])/ Other than that one minor annoyance, I find it very useful, and it lives in my home directory. I suppose a savvy programmer could make a 4 level stack emulation, too. In fact, I am surprised that I have not yet run across a sysRPL or UserRPL program to simulate a voyager or pioneer system--but right in the RPL shell....that would be very useful. BTW I also have the Hrastprogrammer 41series emulator on my 48gx's and I use it frequently---it is nice to be able to do RPN keystroke programming on the 48---or to take a program that I have written on the RPN and just plunk it in there--to have all on one calculator is nice for travel. Best regards, Bill

Re: RPN on an RPL machine Message #10 Posted by Raymond Del Tondo on 8 Nov 2003, 1:17 a.m., in response to message #9 by bill platt Hi Bill, yes, I remember the thread. Actually, if I want HP-41 feeling on my 48GX, I also start an HP-41 emulator (EMU41CV) from Zengrange. There exists an HP-16C emulator for the HP-48 . Ok, it doesn't mimic voyager hardware, but 16C number manipulation features. Best Regards, Raymond

Re: RPN on an RPL machine Message #11 Posted by James M. Prange on 8 Nov 2003, 8:52 a.m., in response to message #9 by bill platt Quote: << DEPTH -> d << LASTARG DEPTH d - ROLLD LASTARG 1 - DROPN DUP DROP >> >> But note that on the RPL calculators, the last arguments save can be disabled, and when it's enabled again, the buffer is empty. For dealing with IFERROR, I often find it easier to disable last arguments save. Sometime the last thing that my programs do is restore the original flags, and thus (presumably) re-enable last arguments save. If you run the above under that condition, it errors, and if you run it again, it returns -1. But it is better than some that I've seen; at least repeated runs return the same value due to the DUP DROP at the end. Try the following: \<< DEPTH \-> d \<< LASTARG DEPTH d - IF DUP THEN DUP2 2 + ROLLD DROPN END DUP DROP \>> \>> This one returns 0 in the event that the last arguments buffer is empty. Of course, if last arguments save is disabled, then it errors out. Quote: I suppose a savvy programmer could make a 4 level stack emulation, too. It never occurred to me that anyone would want such a thing. What would it do, limit the stack to 4 levels and have level 4 replicate downward when anything is removed from the stack? Using vectored ENTER, I suppose that it would be pretty easy to do that for ENTER or any keypress that does an implicit ENTER, but how to have it do after every command within a program I don't see; I think that it would require more than UserRPL. Regards, James Edited: 8 Nov 2003, 9:02 a.m.

[ Return to Index | Top of Index ]

Go back to the main exhibit hall