Tabulating machine
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The tabulating machine was an electromechanical machine designed to assist in summarizing information stored on punched cards. Invented by Herman Hollerith, the machine was developed to help process d
Hollerith 1890 tabulating machine with sorting box.
Hollerith punched card
IBM Type 285 tabulators in use at U.S. Social Security Administration circa 1936
Early IBM D11 tabulating machine, with covers removed
Herman Hollerith
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Herman Hollerith was a German-American statistician, inventor, and businessman who developed an electromechanical tabulating machine for punched cards to assist in summarizing information and, later,
Hollerith c. 1888
Hollerith's grave at Oak Hill Cemetery in Georgetown in Washington, D.C.