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Charles Babbage biography

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  • PLACE OF BIRTH: London, England
  • PLACE OF DEATH: London, England
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Charles Babbage was an English mathematician and inventor who is credited with having conceived the first automatic digital computer.

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Charles Babbage was an English mathematician. The idea of mechanically calculating mathematical tables first came to him in 1813. His first attempt to make computations went up to eight decimals. During the mid-1830s, he developed plans for the Analytical Engine, the forerunner of the modern computer. His design was forgotten until his notebooks were found in 1937. He also invented a speedometer.

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(born December 26, 1791, London, England—died October 18, 1871, London) English mathematician and inventor who is credited with having conceived the first automatic digital computer.

In 1812 Babbage helped found the Analytical Society, whose object was to introduce developments from the European continent into English mathematics. In 1816 he was elected a fellow of the Royal Society of London. He was instrumental in founding the Royal Astronomical (1820) and Statistical (1834) societies.

The idea of mechanically calculating mathematical tables first came to Babbage in 1812 or 1813. Later he made a small calculator that could perform certain mathematical computations to eight decimals. Then in 1823 he obtained government support for the design of a projected machine with a 20-decimal capacity. Its construction required the development of mechanical engineering techniques, to which Babbage of necessity devoted himself. In the meantime (1828–39) he served as Lucasian Professor of Mathematics at the University of Cambridge.

During the mid-1830s Babbage developed plans for the Analytical Engine, the forerunner of the modern digital computer. In this device he envisioned the capability of performing any arithmetical operation on the basis of instructions from punched cards, a memory unit in which to store numbers, sequential control, and most of the other basic elements of the present-day computer. The Analytical Engine, however, was never completed. Babbage's design was forgotten until his unpublished notebooks were discovered in 1937. In 1991 British scientists built Difference Engine No. 2—accurate to 31 digits—to Babbage's specifications.

Babbage made notable contributions in other areas as well. He assisted in establishing the modern postal system in England and compiled the first reliable actuarial tables. He also invented a type of speedometer and the locomotive cowcatcher.

Copyright © 1994-2011 Encyclopædia Britannica, Inc. For more information visit Britannica.com

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