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
IBM 407
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The IBM 407 Accounting Machine, introduced in 1949, was one of a long line of IBM tabulating machines dating back to the days of Herman Hollerith. It had a card reader and printer; a summary punch cou
Tabulating machine
…Company was subsumed into IBM. These companies continued to develop faster and more sophisticated tabulators, culminating in tabulators such as 1949 IBM 407 and 1952 Remington Rand 409. Tabulating machines continued to be used well after the introduction of commercial electronic computers in the 1950s. Many…
A 407 at U.S. Army's Redstone Arsenal in 1961.
IBM 407 (left) with IBM 519 (on right).