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Harry Fensom
Harry Fensom (4 February 1921 — 1 November 2010) was a British electronic engineer with the General Post Office (GPO) at Dollis Hill (UK). During World War II (WWII) he worked with Tommy Flowers on Colossus — the world's first electronic computer — that was used at Bletchley Park to break the German Lorenz SZ-40 cipher machine. After the war, he developed random number generator ERNIE. After his retirement in 1974, he assisted Tony Sale in the rebuild of Colossus.

  1. Wikipedia, Harry Fensom
    Visited 15 January 2024.

  2. Jim Fensom, Harry Fensom Obituary
    The Guardian, 8 November 2010.

  3. Spartacus, Harry Fensom
    Visited 15 january 2024.
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Crypto Museum. Created: Monday 15 January 2024. Last changed: Monday, 15 January 2024 - 11:43 CET.
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