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1936- Konrad Zuse invented the Z1 Computer.
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1942- John Atanasoff and Clifford Berry created the ABC Computer.
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1944- John Presper Eckert and John W. Mauchly came up with the idea for the ENIAC 1 computer. It was the first real scenario where vacuum tubes were used.
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1948- Frederic Williams and Tom Kilburn invented the Manchester Baby Computer and the Williams Tube.
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1951-John Presper Eckert and John W. Mauchly create the first UNIVAC Computer
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The first home computer with a GUI, graphical user interface
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1984-Apple invented the Macintosh Computer. It was the first affordable home computer and created an entirely new revolution in desk top computing.