I enjoyed learning how they added a rotating ball to that typewriter and hooked it up to some kind of mainframe for the first APL implementation I think. https

I enjoyed learning how they added a rotating ball to that typewriter and hooked it up to some kind of mainframe for the first APL implementation I think. https://m.youtube.com/watch?v=_DTpQ4Kk2wA https://m.youtube.com/watch?v=_DTpQ4Kk2wA