PS2IBM’s second generation of personal computers. Released to the public in 1987, the PS/2 series introduced three advances over the PC series: 3.5″ 1.44 megabyte microfloppy disks, VGA and 8514 graphics display standards, and the Micro Channel bus architecture. The 3.5″ disks and VGA can be easily installed on other PCs and will become the standard for new compatible computers. The Micro Channel bus allows for multiprocessing and less aggravation, but cannot be retrofitted to older PCs. This meant millions of add-in cards would not work with the system. IBM also went out of their way to make the machine uncloneable, and these actions would cause the company to lose the spot as number one PC manufacturer to first Compaq and then Dell.

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