A backward glance. Arriving at the punched-card system.
Herman Hollerith's punched-card machine for the US Census office consisted of: a bank of counters for tabulating results; a hand-operated reader that pushed wire contacts through the holes in the card into pools of mercury, completing an electrical circuit; and a sorting box with bins for holdi...
| Published in: | IEEE spectrum 37, 2 (2000). |
|---|---|
| Format: | Article |
| Language: | English |
| Subjects: |