Your First Handheld?

[jbwiebe]

Commodore SR9190R from Sears in 1978 (Grade 11). I knew about and wanted and HP but it wasn't in the budget.
Two interesting facts about this algebraic machine. First, it had a natural log of the gamma function which enabled one to very high factorials. I had not seen this before. Second, I got so tired of friends asking if they could borrow my calculator that I opened it up, removed the keys, and put them back in random order. I knew the keyboard layout well enough to operate in the dark but it was useless to anyone else. From then on no one asked to borrow it more than once!