Colossus Has Been Rebuilt

In celebration of D-Day, Colossus, one of the earliest electronic code-breaking machines, has been rebuilt after ten years of effort by computer conservationists. Colossus was used to break the Lorenz cipher. Remarkably, the use of parallel processing (five tape channels) and short gate delay time (1.2µs) allows the Colossus to match the speed of a modern PC

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