I'm thinking of building a lego punch card reader for my 8 bit breadboard computer, and I like going down rabbit holes like this... And I ended up here: https:

I'm thinking of building a lego punch card reader for my 8 bit breadboard computer, and I like going down rabbit holes like this... And I ended up here: https://www.masswerk.at/keypunch/ https://www.masswerk.at/keypunch/ - virtual keypunch machine.