The Shifter Puzzle
The Shifter Puzzle is the oldest code that I still possess. I had just started learning write code on my TI 83+ Graphing Calculator during my sophomore year of high school. The Shifter Puzzle was an interactive game allowing the single player to play the classic Sliding puzzle, by sorting the numbers one through fifteen by sliding them around a grid. The game kept track of the number of moves made, and kept track of the player's best scores.
History
Today in 2018, I've finally excavated and can now publish the code. My wife had heard me lamenting that I still had some code on my graphing calculator and would love to capture and preserve it, so she bought the Ti Graphlink USB for my birthday!! I couldn't get it to work on my Mac, but the Windows version of TI Connect worked, and I was able to copy the programs and data matricies from the calculator.