Colossus: The Secret Computer That Helped Win World War II

The Computer That Helped Win World War II

Colossus: The Secret Computer That Helped Win World War II

I explore how Tommy Flowers built Colossus, the world's first large-scale programmable electronic digital computer, to crack Germany's advanced Tunny encryption. While Alan Turing developed the initial mathematical methods, Colossus was essential for breaking high-speed teletype codes used by Hitler's command. This machine, now recognized as an IEEE Milestone, allowed the Allies to intercept critical military communications, fundamentally altering the course of the war.

Tunny messages, often signed by Adolph Hitler himself, turned out to be pure gold for the Allies.

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2026-07-27