A rebuilt Mark 2 Colossus computer. Colossus was one of... - John Harris, J1312gc59.jpg

A rebuilt Mark 2 Colossus computer. Colossus was one of the world's first electronic digital computer that was at all programmable. The Colossus computers were developed for British codebreakers during World War II to help in the cryptanalysis of the Lorenz cipher. The National Museum of Computing, Bletchley Park Museum, Milton Keynes - John Harris - 2013-11-26
 
 
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