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Herman Hollerith: Electric Tabulating Device, 1890

Twenty Months

On June 1, 1890, the census count was made and the data began to arrive for counting in September. On December 12, processing was completed on the United States population which was measured at 62,622,250. Some twenty months had been cut from the time that a manual count would have taken.

On September 15, in the midst of this landmark achievement, Herman Hollerith married Lucia Beverley Talcott, the daughter of a mining engineer working in Vera Cruz, Mexico. Their family grew to include three sons and three daughters. In the same year, he was awarded a Ph.D. by Columbia University for his thesis on the Tabulating System.

The tabulating system won world-wide acceptance and use in census counts throughout the world.