Hollerith Tabulator
Full Size Original
Hollerith Tabulator

In 1888, the U.S. Census Bureau held a competition to find a more efficient method to process and tabulate data. Three contestants accepted the Census Bureau's challenge, and former Census Bureau employee Herman Hollerith won. The win earned Hollerith a contract to process and tabulate 1890 census data. Modified versions of his technology would continue to be used at the Census Bureau until replaced by computers in the 1950s.