I am a mixed signal design engineer developing precision data convertor and voltage reference integrated circuits. Over the years, I have written a number of simple design tools to aid in circuit definition and design. I have made them available free to anyone who is interested in using them.  They are written for the HP50g graphing calculator but can also be run on a PC with a free emulator.

They may be downloaded at,
http://www.maxim-ic.com/tools/calculators/hp50g/

I have attempted to provide thorough documentation of each program’s operation, including practical examples and a brief tutorial of the application being addressed.  I hope you find them useful. I frequently update these programs, so any constructive feedback is welcome.

Best Regards,

Steve

I think the HP50g is worth getting if you are willing to write your own programs. In my experience, the HP50g is really a handheld computer, and so is most useful if running programs that take advantage of its increased power, memory and screen size.    As you may be aware http://www.hpcalc.org/ is a good source of programs contributed by HP user’s.  You will find a number of free electrical engineering programs there as well.

I also like MathCad 14.  Actually, I first model my programs in MathCad for verification and debug purposes.  However, I write for the HP50g because it is free (when running the emulator) and quick and portable (when running on the physical calculator).  It’s also a lot cheaper than the cost of a MathCad license for most users.