Breadboard RPN calculator

[Steve Simpkin]

One of the assignments I had in a college course was to write a 6502 assembly language program to create a simple integer calculator using a KIM 1 6502 computer trainer. It only had to add and subtract but I still found it a challenging task at the time. A year or so later, I ended up making a 6502-based talking alarm clock for my senior project.

https://en.m.wikipedia.org/wiki/KIM-1