In 1974 I played the Lunar Lander game on a pocket calculator for hours on end

[This is from the latest issue of my newsletter, The Magnet. If you like it, please subscribe! — Mark]

In the 1970s, my father was an electrical engineer at IBM in Boulder, Colorado. One evening in 1974, he came home from work with a programmable pocket calculator called the HP-65, made by Hewlett-Packard. — Read the rest