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- Scientific American, Vol. 63, July-December 1890 -
- July 1890-December 1890
- Collections - Artifact
Scientific American, Vol. 63, July-December 1890
- Hollerith Tabulating Machine, 1890 - After seven years tabulating the 1880 census, the US Census Bureau ran a contest for a quicker method. Herman Hollerith won, and his "computer" was used for the 1890 census. Data was transferred to punched cards, which were pressed under a plate with pins in it. The pins went through punched holes into mercury-filled wells, completing a circuit and registering the data on the machine's dials.
- 1890
- Collections - Artifact
Hollerith Tabulating Machine, 1890
After seven years tabulating the 1880 census, the US Census Bureau ran a contest for a quicker method. Herman Hollerith won, and his "computer" was used for the 1890 census. Data was transferred to punched cards, which were pressed under a plate with pins in it. The pins went through punched holes into mercury-filled wells, completing a circuit and registering the data on the machine's dials.