In the 1960s, some strange computers were being tinkered into existence. There was one that operated solely on rolling marbles and gates that flipped open and closed. And in 1967, the manual How to ...

Replicating 1960s-era computer hardware can be a daunting task. Components can be hard to find, schematics thin on the ground, and software near-unobtainable. Of course, not every computer from the ...