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  The Z1 was developed by Konrad Zuse. It is considered to be the first programmable computer.
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  Also known as ABC, the Atanasoff-Berry Computer was built by Professor John Vincent Atanasoff and graduate student Cliff Berry. It was the first digital computer.
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  The ENIAC was invented by J. Presper Eckert and John Mauchly. Athough it was not ruled as the first computer, many people consider it to be the first computer invented.
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  The EDSAC is considered the first computer with a stored program.
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  Electronic Controls Company was the first computer company. It was founded by J. Presper Eckert and John Mauchly.
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  The Whirlwind Machine was the first computer build with a RAM. It was developed by MIT
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  TX-O was the first computer with a transistor.
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  The PDP-1 was released by Digital Equipment Corporation, and are considered the first minicomputers.
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  The Altair 8800 was built by Ed Roberts. It was considered the first personal computer.
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  The Xerox Alto was the first computer with a workstation.
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  The IBM 5100 is the first portable computer. The computer weighed 55 pounds and was released in September of 1975.
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  The first Apple Computer was designed by Steve Wozniak.
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  The 701 was the first computer with a PC.
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  The Compaq Portable was the first PC clone. It was released on March 1983.
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  Radio Shack released M2500 XL/2 and M4020 SX computers with the MPC standard,