I did several years of programming in high school. Our teacher had first learned to program in BASIC on TRS-80 and wanted us to have the same first introduction

I did several years of programming in high school. Our teacher had first learned to program in BASIC on TRS-80 and wanted us to have the same first introduction, so we actually started with a gentle introduction to programming on TI-83 calculators in TI-BASIC which we did for about a month (for a year long first year course). My fun achievement was a Tic-Tac-Toe game that could play as 2 player or with an AI. It was pretty crude how I accomplished it, but it played well. Looking back, it was a great idea, because it is one of the few ways to get the feel of retro computing and programming, along with its advantages to getting started, that is still useful and relevant. My TI-BASIC knowledge continued to be helpful into college.