[bimbo]

I still have the HP financial calculator that I bought when I was in grad school over 20 years age. The last time I tried using it, it still worked.

I still use the HP-35 calculator I bought in 1972. It works fine. I particularly like the reverse-polish notation. How did students ever work Thermodynamics problems with a slide-rule?

[snopercod]

Thermodynamics problems with a slide-rule?

Hey, I can still do rectangular to polar conversion on my 10" Post sliderule. (I have a crib sheet in the overleaf of my CRC Tables).