Harvard Mark I
The Harvard Mark I (also known as the IBM ASCC, the Automatic Sequence Controlled Calculator) was the first widely known and influential large scale automatic digital computer.
The Mark I was devised by Howard H. Aiken, created at IBM, shipped to Harvard in February 1944, and formally delivered there on August 7, 1944.
The building elements of the Mark I were switches, relays, rotating shafts, and clutches. It was built using more than 750,000 components, amounting to a size of 50 feet (15.24 meters) in length, 8 feet (2.4384 meters) in height, and a weight of about 5 tons (4535.924 kilograms).
The most famous operator/programmer of the Harvard Mark I was Grace Hopper. Hopper coined the term computer bug when a moth landed on the Mark I and shorted out the switchboard.
Other universities have their own Mark I computers as well, but the Harvard Mark I is generally described as the Mark I.
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