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Herman Hollerith: Electric Tabulating Device, 1890


Information from the following sources was used in the compilation of these webpages. We encourage you to consult these works to broaden your knowledge of Herman Hollerith and his accomplishments.

Hollerith biography:

Herman Hollerith Tabulating Machine:

Tabulating Machines:

History of Computation - Babbage, Boole, Hollerith:

Jacquard's Punched Card:

Hollerith 1890 Census Tabulator: