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  1. Colossus computer - Wikipedia

    Colossus was a set of computers developed by British codebreakers in the years 1943–1945 [1] to help in the cryptanalysis of the Lorenz cipher. Colossus used thermionic valves (vacuum …

  2. Colossus - The National Museum of Computing

    Colossus, the world's first electronic computer, had a single purpose: to help decipher the Lorenz-encrypted (Tunny) messages between Hitler and his generals during World War II.

  3. Colossus | British Codebreaking Computer | Britannica

    Colossus, the first large-scale electronic computer, which went into operation in 1944 at Britain’s wartime code-breaking headquarters at Bletchley Park.

  4. 1944 | Timeline of Computer History | Computer History Museum …

    Designed by British engineer Tommy Flowers, the Colossus is designed to break the complex Lorenz ciphers used by the Nazis during World War II. A total of ten Colossi were delivered, …

  5. Colossus - Crypto Museum

    Colossus was an electronic digital computer, built during WWII from over 1700 valves (tubes). It was used to break the codes of the German Lorenz SZ-40 cipher machine that was used by …

  6. The Colossus Machine - Computer Science

    The Colossus was built before ENIAC, but due to the highly classified nature of the work that went on at Bletchley Park, the plans were destroyed and those who had worked on it were sworn to …

  7. Colossus computer explained

    Colossus used thermionic valves (vacuum tubes) to perform Boolean and counting operations. Colossus is thus regarded as the world's first programmable, electronic, digital computer, …

  8. What is Colossus? - Computer Hope

    Sep 7, 2025 · The Colossus was the first electric programmable computer used by the British during World War II. The Colossus was used as a codebreaker to decode the Lorenz cipher, …

  9. Rediscovering Colossus, the First Large-Scale Electronic Computer

    Apr 21, 2025 · Colossus, developed by British codebreakers during World War II, was built to crack the Lorenz-encrypted messages of the German High Command. In doing so, it …

  10. The History of Colossus Computer

    May 23, 2025 · Colossus was the first of the electronic digital machines with programmability, albeit limited in modern terms. It was not, however, a fully general Turing-complete computer, …