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Antikythera mechanism, the world's first computer: Tech Time Machine

It was on this day in history that a Greek archaeologist made a startling discovery: that of what is considered to be one of the world's oldest mechanical devices.

Now playing: Watch this: Tech Time Machine: 17 May
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It was on this day in history that a Greek archaeologist made a startling discovery: that of what is considered to be one of the world's oldest mechanical devices.

Dubbed the Antikythera mechanism, after the Roman wreck that it was found aboard, it's now widely regarded as the world's oldest known "computer". Find out more about the device, and what it did, in today's episode of Tech Time Machine.