Front panel of a 2007 re-creation

A Computer From Ancient Greece

A corroded lump pulled from a shipwreck turned out to be the oldest known analog computer. The Antikythera mechanism was built in ancient Greece and could model the sky with gears you turned by hand.

Antikythera Mechanism: Ancient Greece's Computer

ΣΚΓ, indicating the Saros cycle of 223 months, present on fragment 19.

It Predicted the Future

Turn its small crank, and bronze gears tracked the Sun, Moon, eclipses, and calendar cycles. It could predict eclipses decades ahead and follow a four-year cycle of athletic games.

Antikythera Mechanism: Ancient Greece's Computer

Antikythera Mechanism: Ancient Greece's Computer | DeepSwipe