The 'Colosus' computer, Bletchley Park, 1943.
3 6 c m
actual image size: 32cm x 28cm

The 'Colosus' computer, Bletchley Park, 1943.

© Bletchley Park Trust / Science & Society Picture Library


This shows a rectangular panel from Colosus, 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 Colosus, and so aided the Allies victory.

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