For the AP Calculus class, a graphing calculator was required, so my parents sprung the (I believe) $89.99 for a TI-82 in 1996 (it is amazingly $116 on Amazon right now).

Things haven't changed much in the graphing calculator world since you purchased that TI-83 back in the late '90s, but that's actually OK ...

It took three years to build and cannot, due to resource constraints on TI-83/84 calculators, execute more than 16 kilobytes of code. When Marcolina set out to rebuild Portal on TI’s graphing ...