‘Alan Turing was an English mathematician, wartime code-breaker and pioneer of computer science’ (BBC). He was born on the 23rd of June, 1912 in London, and committed suicide on the 7th of June, 1954.
During the war ‘Here he played a vital role in deciphering the messages encrypted by the German Enigma machine, which provided vital intelligence for the Allies. He took the lead in a team that designed a machine known as a bombe that successfully decoded German messages. He became a well-known and rather eccentric figure at Bletchley’ (BBC).
The Bombe deciphered the messages by creating an algorithm that ticks its way through many permutations in a cycle of about 10 minutes. ‘Instead of looking for the correct permutation, what they did was find out that if you get the machine to stop when it had 25 out of 26 incorrect permutations that was a good result. And when it had 26 out of 26 negative permutations it would just carry on until it found a wire that was not live’ (Chacksfield, M. 2014).
Due to his legacy, there has even been a movie based on his work; ‘the Imitation Game, a new movie that brilliantly dramatises the code-breaking events that helped end World War II’ (Chacksfield, M. 2014).
References:
BBC. Alan Turing. Available from: http://www.bbc.co.uk/history/people/alan_turing [Accessed 18 Nov 2014].
Chacksfield, M. (15/11/204). Alan Turing, the Enigma code and the power of negative information. Available: http://www.techradar.com/news/computing/alan-turing-the-enigma-code-and-the-power-of-negative-information-1273190. [Accessed 18 Nov 2014].
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