## 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 183

The diagonal board could be attached to the

precisely the required effect. No switching operations were required for this; the

following of implications could still be achieved by the virtually instantaneous flow

of ...

The diagonal board could be attached to the

**Bombe**in such a way that it hadprecisely the required effect. No switching operations were required for this; the

following of implications could still be achieved by the virtually instantaneous flow

of ...

Page 184

Thus the logical principle of the

following the proliferation of implications to the bitter end. But there was nothing

simple about the construction of such a machine. To be of practical use, a

would ...

Thus the logical principle of the

**Bombe**was the wonderfully simple one offollowing the proliferation of implications to the bitter end. But there was nothing

simple about the construction of such a machine. To be of practical use, a

**Bombe**would ...

Page 277

This meant that it performed simple acts of decision which went much further than

the 'yes or no' of a

what the Colossus was to do next. The

This meant that it performed simple acts of decision which went much further than

the 'yes or no' of a

**Bombe**. The result of one counting process would determinewhat the Colossus was to do next. The

**Bombe**was merely supplied with a ...### What people are saying - Write a review

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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 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 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