The first computer?

The Antikythera just might have been ... The Antikythera is "a mysterious clockwork object made up of numerous meshed cogs that was discovered more than a century ago among the cargo of a Greek shipwreck.
The mystery of how the Greeks had made a machine that appeared to be 1,800 years ahead of its time and why that knowledge was seemingly lost is fascinating, but Marchant's story is really about the scientists and engineers who have fallen under the spell of the Antikythera mechanism over the last century."