Exhibits At the Museum

This Day in History

Today: April 23, 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 (shown to the left) 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.