(25) Resistance Computation adder-subtractor circuits

[Steve Simpkin]

That is very cool! Over the decades I have used many Analog Devices parts in various products including Op-Amps, analog gates, level converters, audio CODECs and DSPs. It is one of my favorite electronic parts companies.

The HP-25 program on page 18 seems reasonably clever. I have always been amazed at what you can do with 49 steps. I found it so capable that I used my HP-25 for 10 years though High School, college and my first engineer job.

Thanks!