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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.
Although Programma 101 was the first commercial desktop computer, HP is identified by Wired magazine as the producer of the world's first device to be called a personal computer, the Hewlett-Packard 9100A, introduced in 1968. Programma 101 was called computer personale (in Italian), at Fiera di Milano, 1966.