Somehow I forgot to list the Free42 <https://thomasokken.com/free42/>, which is a re-implemented version of the HP-42. Although the HP42 was programmable, the on-screen keyboard is not cluttered and is easier to read than most of the others. Other good features: you can copy/paste the calculation results to/from the clipboard, and there are MacOS and Linux versions available.
On Friday, August 26, 2022 at 11:42:51 PM UTC-4 Thomas Passin wrote: > Sometimes there is just no substitute for a good calculator. Even though > your computer could do a little calculation for you - if it had a decent > calculator program - the applet that came with the OS is hopeless and you > are stuck. I sometimes use one to calculate parameters for use while I am > working with GF4, and I have occasionally had other needs for a calculator > in the past. > > I am very fond of HP Reverse Polish Notation (RPN) calculators. I used > one or another professionally for years before -and sometimes after - the > advent of practical personal computers. If you aren't used to RPN, it > takes a little getting used to, but it's generally much easier and faster > to use once you have. Those of you who have used them in the past know > what I mean. > > There are on-screen emulators for a number of HP calculators, and they > work well (some of them may be for Windows only). The best ones use the > actual microcode extracted from old calculators. HP had some engineers who > really knew their stuff about arithmetic calculations and maintaining > precision in difficult cases, and their algorithms were generally > outstanding. > > A number of these calculators could be programmed, a feature I made good > use of. But the extra functionality makes the keyboard more complicated and > hard to read. Probably few of us will actually do any programming with > these emulators even though they support it. > > Some of the calculators that are available include the HP35 (the original > HP pocket calculator), HP45, HP21, HP25, HP41, and HP15c. I recommend the > HP-45 emulator because it has the best combination of functions, > simplicity, and an easy-to-read onscreen keyboard. The HP-15c emulator is > very good, but the calculator has a horizontal layout and is somewhat > large, so it may not fit well on the screen with other program windows very > well. It depends on your screen, of course. Here are some links for > emulators - > > HP 35, 45 <http://www.panamatik.de/html/hp_classic.html> > HP21, 25 <http://www.panamatik.de/html/hp_woodstock.html> > HP41 <http://www.hp41.org/Emulation.cfm> > HP15c <https://hp15c.com> > > Have fun! > -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/3ae7a78c-d5db-4df3-b4ee-902242a27871n%40googlegroups.com.
