(1) See PS2 for Sony's PlayStation 2.
(2) A personal computer series from IBM, introduced in 1987 and superseding the original PC line. It introduced four advances: a smaller mouse and keyboard connector (see PS/2 connector), the 3.5" floppy disk, VGA graphics and the Micro Channel bus.
The Micro Channel bus had limited success outside of IBM, but the 3.5" floppy was extremely popular up to the late 1990s. The mouse and keyboard connectors later switched to USB, and the 640x480 resolution of VGA has since become the lowest setting for PC display systems.
The PS/2 was the last IBM PC desktop series with radical changes, but IBM did introduce several innovations on its ThinkPad laptops, which were highly praised (see ThinkPad).
The 286-based Model 50 was one of IBM's early PS/2 models. The Micro Channel bus, VGA graphics and 3.5" floppy disk were welcomed additions at that time. (Image courtesy of International Business Machines Corporation. Unauthorized use not permitted.)
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