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The Sphere I was a personal computer completed in 1975 by Michael Donald Wise (1949–2002), founder of Sphere Corporation, of Bountiful, Utah. The Sphere I featured a Motorola 6800 CPU, onboard ROM, Monitor, 4 KB of RAM, and a keyboard with a numeric keypad. Sphere 1 has been called the first true Personal Computer by Byte (magazine) in its commemoration issues (every 5 years). What differentiated the Sphere I from prior microcomputers was that it included a keyboard, a numeric keypad, and a monitor.

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