Antikythera mechanism
“ The puzzling instrument is a clockwork computer from ancient Greece that used a fiendishly complex assembly of meshed cogs to simulate the movement of the planets, predict lunar eclipses and indicate the dates of major sporting events. The Antikythera mechanism was discovered by sponge divers in 1901 who chanced upon the wreck of a Roman vessel off the coast of the Greek island of Antikythera. The ship was filled with bronze statues, pottery and glassware - booty that had been plundered from across the ancient Greek world. ”
Antikythera clockwork computer may be even older than thought