When I was in college in the 80s there was an explosion of creativity in the calculator market (kind of like the TV and camera markets today -- they're all going broke and trying to come up with new killer products). One of the things that became very popular was calculators with 32kB or 64kB of RAM, a QWERTY keyboard, that ran BASIC.

Anyway, I was pure math major and we could bring pretty much anything short of an actual desktop computer into exams -- it was pretty much useless. (Now, a few years later, and Mathematica running on a maxed out Mac would have been pretty darn useful.)