For much of the 20th century, data was entered into data processing machines using punched cards. This is a machine for punching such cards manufactured by International Business Machines Corporation ...

This key-driven, manual verifier has 15 black rubber keys. Twelve are for the 12 columns on a punch card. These are labeled from 0 to 9, X, and blank. Two other keys move the card one space, and the ...

Earlier this month, IBM celebrated its 100th birthday. It wasn't called IBM back in 1911, though: It was lumbered with the high-tech-for-its-time name of Computing-Tabulating-Recording Company, the ...