Who built the first known computer, and when?
The Antikythera mechanism, dating to roughly 100 BCE, is considered the world's first known analog computer. Recovered from a Roman-era shipwreck off the Greek island of Antikythera, this bronze device contained over 30 interlocking gears and was used to predict astronomical positions, eclipses, and even the timing of the ancient Olympic Games.
Source: Nature journal