Hollerith files "Art of Compiling Statistics"; holes punched in cards will read back by machine
By 1884, the United States Census Bureau faced a problem it could not solve with pencils and ledger sheets: the 1880 census had taken eight years to tabulate, and the next one was already approaching. Herman Hollerith, a German-American statistician from Buffalo who had studied at the Columbia School of Mines, filed his first patent application — titled "Art of Compiling Statistics" — on September 23, 1884, describing a system that stored data as holes punched in cards and read it back electromechanically. U.S. Patent 395,782 was granted on January 8, 1889. The company Hollerith built on that patent eventually became IBM…
