The 'Colossus' computer, Bletchley Park, 1943.

The 'Colossus' computer, Bletchley Park, 1943.
3 1 c m
actual image size: 32cm x 23cm


This shows a switch panel from Colossus, the world's first electronic programmable computer, at Bletchley Park in Buckinghamshire. Bletchley Park was the British forces' intelligence centre during WWII, where cryptographers deciphered top- secret military communiques between Hitler and his armed forces. The communiques were encrypted in the Lorenz code which the Germans considered unbreakable, but the codebreakers at Bletchley cracked the code with the help of Colossus, and so aided the Allies victory.

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© Bletchley Park Trust / Science & Society Picture Library

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