re: #96 Decatur Deb

Mine was an SR-50 en.wikipedia.org Cost about $150 in the U-store, I think.

Some of my fellow physics majors had HP calculators with reverse Polish logic, which they swore by, but made no sense to me.

Several years later, when I entered graduate school, I got a Radio Shack scientific calculator for about $40. Then, when I was a physics and math teacher, I joined the programmable calculator era with the TI-85. en.wikipedia.org We could use those as portable lab devices with an assortment of accessories to measure pressure, force, temperature, and so on.

Now I reckon you can do the same thing with your cellphone.