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Alan Turing

Alan Turing (1912-1954) was a groundbreaking mathematician and logician known for his pivotal role in the development of modern computer science. Born in London, he excelled in mathematics at King's College, Cambridge. Turing introduced the concept of the Turing Machine in 1936, laying the groundwork for computers. During WWII, he famously broke the German Enigma code. Despite his monumental contributions, Turing faced persecution for his homosexuality, leading to tragic consequences. In 2009, the UK government apologized for its treatment of this brilliant mind.

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Alan Turing

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  1. Alan Turing (1912 - 1954)

  2. Early Biography • Born on June 23, 1912 in London, England • Attended a prestigious public school where he showed promise in math and science but neglected the “classics” • Later attended King's College in Cambridge, his second choice, after failing to get into Trinity College

  3. Turing Machines • Around 1936 Turing developed the concept of a device that could read and manipulate symbols on a strip of tape • Turing used this to address the Entscheidungsproblem,which he found “undecidable” • The concept of a Turing Machine is used as the basis for all computers today • Machines capable of performing all the operations a Turing Machine could theoretically do are said to be “Turing complete”

  4. World War II • Turing headed the code-breaking efforts in England to crack the German “Enigma machine” • Developed a machine that cracked the code by contradiction • Named an “Officer of the Order of the British Empire”

  5. After the War • Turing began work on the Automatic Computing Engine • Devised the Turing Test thought experiment while working on one of the first stored-program computers • Wrote a chess program before there existed any computer capable of running it • Later turned to mathematical biology, specifically the appearance of the Fibonacci sequence in nature

  6. Homosexuality & Death • In 1952 Turing was convicted of being a homosexual • Underwent hormone therapy to avoid going to prison • Two years later he was found dead of an apparent suicide by cyanide poisoning • On September 10, 2009, the British government released an official apology to their treatment of Turing

  7. Bibliography • http://www.alanturing.net/turing_archive/pages/Reference%20Articles/codebreaker.html • http://www.abelard.org/turpap2/tp2-ie.asp • http://www.sciencedaily.com/releases/2006/11/061128093244.htm • http://news.bbc.co.uk/2/hi/technology/8249792.stm

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