W397

GREAT BRITAIN

Value

50 Pounds

Issued by

Bank of England

Date

© 2020

Material

Polymer


Elizabeth II

Alan Turing
mathematical table and formulae from Turing’s seminal paper “On Computable Numbers, with an application to the Entscheidungsproblem”;
Automatic Computing Engine (ACE) Pilot Machine (one of the first electronic stored-program digital computers), series of background images with technical drawings from the "ACE Progress Report";
ticker tape depicting Alan Turing’s birth date (23 June 1912) in binary code;
technical drawings for the "British Bombe" (machine used at Bletchley Park to break Enigma-enciphered messages during WWII)

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