Tag
punched-cards
- Feb 1, 2025 The Analytical Engine Store, Mill, and Barrel Control How a planned 1830s engine separated storage from arithmetic, sequenced operations from punched cards, and used a studded barrel as a microprogram store. computing history
- Nov 4, 2023 Punched-Card Encoding in Hollerith Tabulating Equipment How a pinned card completes a circuit into a mercury cup, what the hole pattern encodes, and why sorting a deck became the way to answer arbitrary questions about census data. computing history