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The first electronic and digital computer is the Mark 1 Machine (also known as "Automatic Sequence Controlled Calculator").
Because no one know about electronic computer
No, the following digital computers preceded ENIAC: Harvard Mark I, ABC, Zuse Z1 & Z2 & Z3, Colossus Mark 1 & Mark 2. Also many analog computers preceded these.However ENIAC was the first general purpose programmable electronic digital computer.
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That depends on which Mark I you are asking about. There were several different Mark I computers at different locations.
The first electronic programmable computer was known as Colossus. Please see the related link. The Prototype 'Colossus Mark 1' was working in 1944. The first freely programable computer was the Z1 built between 1936 and 1938.
Harvard University
He named it the Mark I. Later he made Mark II&III. (:
None. The Harvard Mark 1 ASCC (IBM Automatic Sequence Controlled Calculator) was an electromechanical computer built for Harvard by IBM's Endicott NY facility in 1944. It was constructed from 765,000 components which included switches, relays, motors, rotating shafts, and clutches. It contained no vacuum tubes.The Harvard Mark III ADEC (Aiken Dahlgren Electronic Calculator) was the first computer to use vacuum tubes. It was built at Harvard in 1949 using 5000 vacuum tubes and 1500 crystal diodes, along with electromechanical components. The Harvard Mark IV, built in 1952, was the first fully electronic design.
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a Pioneer U.S> Government computer. there were several *Marks.