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 315
... delay line . ' - The idea was based on the fact that the time taken for a sound wave to travel along a few feet of pipe was of the order of a thousandth of a second . The pipe could be regarded as storing the sound wave for that period ...
... delay line . ' - The idea was based on the fact that the time taken for a sound wave to travel along a few feet of pipe was of the order of a thousandth of a second . The pipe could be regarded as storing the sound wave for that period ...
Page 322
... delay lines , not with any great enthusiasm , but because they were already working . They held the obvious disadvantage , from the point of view of accessibility , of involving a delay . His plan was for a delay line to hold a sequence ...
... delay lines , not with any great enthusiasm , but because they were already working . They held the obvious disadvantage , from the point of view of accessibility , of involving a delay . His plan was for a delay line to hold a sequence ...
Page 391
... delay line was that , in both senses , it eliminated delay . It was essentially an ordinary piece of equipment , not requiring precision engineering as did the mercury delay line , and could be taken ' off the shelf ' . In practice this ...
... delay line was that , in both senses , it eliminated delay . It was essentially an ordinary piece of equipment , not requiring precision engineering as did the mercury delay line , and could be taken ' off the shelf ' . In practice this ...
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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 Britain 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 instructions 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 Shaun Wylie Sherborne signals symbols talk tape teleprinter theorem theory thing thought took Turing machine U-boat universal machine Womersley word writing