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The first desktop and mass-market computer. In 1964, the first desktop computer, the Programma 101, was unveiled to the public at the New York World's Fair. It was invented by Pier Giorgio Perotto and manufactured by Olivetti. About 44,000 Programma 101 computers were sold, each with a price tag of $3,200.
1 1946 - ENIAC-World's first electronic, large scale, general-purpose computer, built by Mauchly and Eckert, and activated at the University of Pennsylvania in 1946. 2  ENIAC recreated on a modern computer chip.3  See an explanation of ENIAC on a Chip by the Moore School of Electrical Engineering, University of Pennsylvania. 1946 - ENIAC-World's first electronic, large scale, general-purpose computer, built by Mauchly and Eckert, and activated at the University of Pennsylvania in 1946. 2  ENIAC recreated on a modern computer chip.