Scientists claim they have cracked how the world's first computer worked more than 2,000 years ago.Their replica of the Antikythera mechanism "challenges all our preconceptions about the technological capabilities of the ancient Greeks".One researcher said the findings suggested the Greeks could have made clocks hundreds of years before they were invented in 14th century Europe.Mystery has surrounded how the device predicted the movements of the Moon, Sun and five known planets since its discovery at sea in 1901.Its ancient brass gear mechanism has been dubbed the first and oldest known analogue computer and was able to predict astronomical positions and eclipses decades in advance to create calendars and use in astrology.The hand-powered.
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