This project has created scientific firmware for the HP-20b and HP-30b business calculators.
The WP 34S turns either of these business calculators into a powerful keystroke programmable scientific device.
The WP 34S has been alive and stable since 2011. We have succeeded in satisfying the most picky users - read about their experiences on the http://www.hpmuseum.org/forum.
In 2014, we've updated the WP 34S to version 3.3. Our customers confirm the documentation for the WP 34S is excellent and comprehensive (see feedback); a printed edition is available from: https://www.createspace.com/5304580
We have also produced the WP 31S which is derived from the WP 34S source code. This is an entry-level scientific calculator. The printed manual for this calculator is available from: https://www.createspace.com/4773370
Absolutely magnificent good work. A perfect calculator project. A briliant idea as well, to replace a half stupid hardware with a big brain transplantation. In this project I can smell the engineering art of HP in the late 70th to 80th. Delivered with a professional documentation, which seems to have the approach to be comprehensive, which is quite impossible in view of the wealth of functionality. And as far as I tried until now, there is no error, no single bug in the software!
Works with WINE on Linux!
simple and straight forward to use
fast download and works, recommended.
wp34s works nicely