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Hollerith Tabulating System
1890

1890 census counter
Having struggled to process the masses of information gathered in the 1880 census, the United States Census Bureau decided to automate its operation in 1890. The bureau turned to a machine Herman Hollerith had specially invented for the purpose. Not simply a single machine, the Hollerith Tabulating System was a system of machines that included a punch, a tabulator, and a sorting box. Hollerith's business joined a firm that later became IBM.

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Learn more!
· Tabulating the census
· Computer History Collection, NMAH

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