Comment by JohnBooty

In HS, teachers hadn't even caught on to that possibility yet.

I programmed quite a cheat sheet worth of formulae etc into my calc. Right before the test, I dropped it onto the floor. The battery cover popped off and the AA batteries popped out.

These were TI-81s (IIRC) so no battery backup -- it was a full memory wipe every time you changed batteries. Sooooooooooooo... goodbye cheat sheet!

However, I aced that test anyway, legitimately. Creating the cheat sheet actually helped me to learn the material. There's a lesson or two in there somewhere...