Alan Turing On £50 Note |

Written by Sue Gee |

Sunday, 21 July 2019 |

The next £50 bank note, the highest denomination issued by the Bank of England, honors Alan Turing. This news prompted The Times to write a new obituary for "this enigmatic genius". Having announced last year that the £50, which is expected to enter circulation by the end of 2021, would commemorate the field of science, the Bank of England received a total of 227,299 nominations, covering 989 eligible characters. This was reduced to a shortlist of 12 options, from which the Governor, Mark Carney made the final selection. In making the announcement at the Manchester Museum of Science and Industry, Carney stated:
The Bank of England press release also notes:
The design of the note incorporates many different aspects of his pioneering work and features: *A photo of Turing taken in 1951 by Elliott & Fry which is part of the Photographs Collection at the National Portrait Gallery.**A table and mathematical formulae from Turing’s seminal 1936 paper “On Computable Numbers, with an application to the Entscheidungsproblem” Proceedings of the London Mathematical Society. This paper is widely recognized as being foundational for computer science. It sought to establish whether there could be a definitive method by which any theorem could be assessed as provable or not using a universal machine. It introduced the concept of a Turing machine as a thought experiment of how computers could operate.**The Automatic Computing Engine (ACE) Pilot Machine which was developed at the National Physical Laboratory as the trial model of Turing’s pioneering ACE design. The ACE was one of the first electronic stored-program digital computers.**Technical drawings for the British Bombe, the machine specified by Turing and one of the primary tools used to break Enigma-enciphered messages during WWII.**Turing’s signature from the visitor’s book at Bletchley Park in 1947, where he worked during WWII.**Ticker tape depicting Alan Turing’s birth date (23 June 1912) in binary code. The concept of a machine fed by binary tape featured in Turing’s 1936 paper.*
The quote on the bank note reads:
These words of Alan Turing come from an article in
When Alan Turing died in 1954 his original Times obituary was short and "terse" according to the extended one published in response to his appearance on the bank note. This was partly because the very existence of Bletchley Park and the code breaking work done there was not officially acknowledged until 1974, secrecy which led to him being under appreciated in his lifetime. The new one makes up for its omissions - including discussing his homosexuality and the criminal conviction for which he was officially pardoned in 2013. When Alan Turing was featured in a postage stamp in 2012, it was the Bombe, referring to his code breaking work that was depicted. Now the £50 includes his portrait and makes reference to make aspects of his genius.
## More InformationAlan Turing to be the face of new £50 note Alan Turing obituary July 20, 2019 ## Related ArticlesCommemorative Stamp for Alan Turing Cumberbatch As Turing - Trailers Released Turing and His Times To be informed about new articles on I Programmer, sign up for our weekly newsletter, subscribe to the RSS feed and follow us on Twitter, Facebook or Linkedin.
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