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 162
... message to one was a message to all . So messages had to be disguised , and not just this or that ' secret message ' , as with spies and smugglers , but the whole communication system . It meant mistakes , restrictions , and hours of ...
... message to one was a message to all . So messages had to be disguised , and not just this or that ' secret message ' , as with spies and smugglers , but the whole communication system . It meant mistakes , restrictions , and hours of ...
Page 171
... message the first letter were A , and the fourth letter was R , then in any other message where the first letter was A , the fourth letter would again be R. With enough messages , they could build up a complete table , say : First ...
... message the first letter were A , and the fourth letter was R , then in any other message where the first letter was A , the fourth letter would again be R. With enough messages , they could build up a complete table , say : First ...
Page 201
... messages became German . It required a second stage of attack to recover these , the innermost secrets of the U - boat operations . Now they had what they needed to do it . The growing body of knowledge was rapidly put to use by the ...
... messages became German . It required a second stage of attack to recover these , the innermost secrets of the U - boat operations . Now they had what they needed to do it . The growing body of knowledge was rapidly put to use by the ...
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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