|Re: How many engineers etc. out there still using hp41?|
Message #35 Posted by Vieira, Luiz C (from Brazil) on 14 Sept 2005, 1:17 p.m.,
in response to message #1 by don wallace
I am almost sure I’ll start some discussion, maybe some flames, but I think that as you ask for some feedback, let’s try a few thoughts.
When I bought my HP41C in the 80’s I used to dream of possibilities and add-ons. I was later known about the 41´s adaptation of the HPIL system, but I could not afford any of those. I remember showing a friend of mine the HP41 running programs I wrote for 3D and complex arithmetic, and at his turn, he showed me his Apple computer. Even if I could work with a color screen and use the whole bunch of kilobytes plus floppy disks, I’d still prefer my pocket-size, fully portable HP41.
Now I use the HP41’s I have from time to time, mainly to run earlier programs prior to store them or to port them to other systems. Most of the programs I wrote for the HP41 are now available as internal functions, routines in newer models, but some of these HP41 programs contain specific procedures or data handling that may be useful somehow. I still use RPN/RPL calculators at the academic level (I’m an electrical engineer and since 1995 I act as a university teacher), but when I find the time and the ‘tease’, I go for some RPN exercise. A couple of days ago I wrote a small program for a friend that asked me if there was a way to compute NFV (net future value) in an HP12C/Platinum without the need of changing existing TVM data neither use extra storage registers. My final version is a 31-step, fully automated program.
If the HP41 system is still active, in production, or (even better) has compatible, updated replacement components, then I’d go for new add-ons. In fact, I think that the only ones are worth buying today are Meindert Kuiper´s MLDL, Christoph Klug´s HPIL/PC connection card and Diego Diaz´ Clonix. As for what I know, with these add-ons, you can make the HP41 sing and dance.
I myself like to keep track with the new, and I have been dealing with some experiments involving bidirectional IR I/O for the HP48/49 series. Just a few tests with sending and receiving, nothing exceptional so far.
Thanks for your offer, Don. I hope you take these words of mine as my own feedback. And guys, please, don’t toast me up…