Many think the Apple II and Radio Shack's TRS-80 represent the beginning of the personal computer era. Indeed, Byte Magazine labeled these two microcomputers, along with Commodore's PET, all of which debuted in the same year, as the "1977 Trinity." So it's not unusual for the casual observer to cite those units as "the first."
But that's wrong. Those in the field generally recognize the Altair 8800 as the first actual personal computer. Coming out in 1974, its use of an Intel microprocessor, the S-100 computer bus, and Microsoft's founding product (Altair BASIC) became the template upon which a future industry thrived.
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