I only needed a TI-83 in high school, but I think my college classed wanted me to buy a new TI-89. I still have my TI-89 in my office though I haven't used it

I only needed a TI-83 in high school, but I think my college classed wanted me to buy a new TI-89. I still have my TI-89 in my office though I haven't used it ever... no idea where the TI-83 went.