[masraum]

Originally Posted by CurtEgerer

I went to engineering school in the transition period between slide rules, etc. and computers/calculators (late 70s/early 80s). So I never used a slide rule. Here is a cool Texas Instruments Ti 59 I bought at an estate sale. The guy was an engineer for Dow Chemical. Included were several dozen program cards for various things he did. Most are dated 1980. And it all works - even the thermal printer! I was always an HP guy and used similar programmable HP calculators over the years.

Very cool!

I had an HP 32SII (RPN). It was killed in a move or storage or something. It looks like they are available out there. I have RPN calc apps on my PC and phone. RPN just makes so much more sense to me, seems super efficient. I've debated getting one of the HPs off of ebay, but I suspect it'd be close to $100 to get one in good working shape, and it would mostly sit around unused.

I had a TI-Voyage 200 for a while. It would solve differential and integration problems.