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This Day in History

Today: November 20, 2014
Herman Hollerith

August 16, 1890

Census Bureau Announces Results Using Herman Hollerith's Machine

The US Census Bureau announces the U.S. population of 62,622,250, determined for the first time by using an automated method, the Hollerith Census Machine. The Hollerith machine sorted returns by completing an electrical circuit wherever a hole existed in a punch card and could process almost 10 times the number of census data than a human clerk.

Census workers used the Punch Pantograph to enter data.

Hollerith formed the Tabulating Machine Company in 1896. This company merged with two others in 1924 to become the International Business Machines company or IBM.

Hollerith died November 17, 1929.