IBM announces 3 millionth PS/2 personal computer
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30th September 1988 The PS/2 was IBM's follow-on computer to its PC and PC/XT and PC/AT machines. The PS/2 used the Micro Channel Architecture, a bus format incompatible with IBM's open ISA standard adopted by clone makers IBM had introduced its PS/2 machines just the year before, making the 3 1/2-inch floppy disk drive and video graphics array standard for IBM computers and compatibles. PS/2s were the first IBM computers to use Intel's 80386 chip and IBM released a new operating system, OS/2, at the same time, allowing the use of a mouse with IBM computers for the first time.
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