Alan Turing: The EnigmaA gripping story of mathematics, science, computing, war history, cryptography, and homosexual persecution and liberation. Hodges tells how Turing's revolutionary idea of 1936-- the concept of a universal machine-- laid the foundation for the modern computer. Turing brought the idea to practical realization in 1945 with his electronic design. This work was directly related to Turing's leading role in breaking the German Enigma ciphers during World War II, a scientific triumph that was critical to Allied victory in the Atlantic. Despite his wartime service, Turing was eventually arrested, stripped of his security clearance, and forced to undergo a humiliating treatment program-- all for trying to live honestly in a society that defined homosexuality as a crime. This New York Times bestselling biography of the founder of computer science and artificial intelligence is the definitive account of an extraordinary mind and life. --Excerpted from 2014 version, published by Princeton University Press. |
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Page 294
... plans . He had learned how to build a brain - not an electric brain , as he might possibly have imagined before the war - but an electronic brain . It was thus that ' round about 1944 ' , Alan's mother heard him talking20 about ' his plans ...
... plans . He had learned how to build a brain - not an electric brain , as he might possibly have imagined before the war - but an electronic brain . It was thus that ' round about 1944 ' , Alan's mother heard him talking20 about ' his plans ...
Page 298
... plans also called for storing numbers in the form of positions of gear wheels . Each instruction card would cause an arithmetical operation such as ' subtract the number in location 5 from that in location 8 , and put the result in ...
... plans also called for storing numbers in the form of positions of gear wheels . Each instruction card would cause an arithmetical operation such as ' subtract the number in location 5 from that in location 8 , and put the result in ...
Page 368
... planning staff now , because it must be trained and in full production long before the machine itself is available ... plans , a paper machine and paper programs , abstruse and insubstantial as the ' satisfactory numbers ' he had tried ...
... planning staff now , because it must be trained and in full production long before the machine itself is available ... plans , a paper machine and paper programs , abstruse and insubstantial as the ' satisfactory numbers ' he had tried ...
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Common terms and phrases
Alan Turing Alan Turing's Alan wrote Alan's American AMT's arithmetic Bletchley Bletchley Park Bombe boys brain British calculation called Cambridge cathode ray tube chess Christopher cipher Computable Numbers cryptanalytic Darwin delay line Delilah differential analyser digits discussion Don Bayley Donald Michie EDVAC electronic enciphered engineering ENIAC Enigma machine explained fact G.H. Hardy German Hanslope Hilbert homosexual human idea intelligence interest kind King's knew letter logical Manchester mathematician mathematics Max Newman mechanical messages method mind Morcom naval Enigma Neumann never Newman operations organisation paper perhaps Peter Hilton physical play plugboard position possible Princeton principle problem question Robin Gandy rotor scientific secret sexual Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing