Tabulating machine

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Hollerith 1890 tabulating machine and sorter

The tabulating machine was an electrical device designed to assist in summarizing information and, later, accounting. Invented by Herman Hollerith, the machine was developed to help process data for the 1890 U.S. Census. It spawned a larger class of devices known as unit record equipment and the data processing industry.

• See also: Wikipedia, Commons

• Related: Leslie Comrie, Wallace John Eckert

Columbia University Computing History: Hollerith &... Columbia University Computing History: Hollerith & IBM Tabulators and Accounting Machines www.columbia.edu/acis/history/tabulator.html - Web

IBM Archives: Electric tabulating machines (1930) IBM Archives: Electric tabulating machines (1930) www-03.ibm.com/.../vintage_4506VV9002.html - Web

IBM Archives: Electric accounting machines (1932) IBM Archives: Electric accounting machines (1932) www-03.ibm.com/.../vintage_4506VV9012.html - Web

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IBM Accounting Machine manuals IBM Accounting Machine manuals www.bitsavers.org/pdf/ibm/punchedCard/AccountingMachine - Web

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