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IBM's PS/2 was designed to remain software compatible with their PC/AT/XT line of computers upon which the large PC clone market was built, but the hardware was quite different. PS/2 had two BIOSes : one named ABIOS (Advanced BIOS) which provided a new protected mode interface and was used by OS/2, and CBIOS (Compatible BIOS) which was included ...
The computer uses IBM's Micro Channel architecture (MCA) bus and has 4 internal bus slots: one 32-bit AVE, one 32-bit MME, and two 16-bit short slots. [ 6 ] The internal gas plasma display of the IBM P75 is XGA /VGA, EGA , MCGA , CGA compatible, and operates at a maximum 640×480 in 16 shades of grey in VGA mode.
Explanatory notes. Built-in or optional monitors are CRTs unless mentioned otherwise.; The Space Saving Keyboard is a 87-key numpad-less version of the Model M. [1]The 25 Collegiate, intended for college students, had two 720 KB floppy drives, maxed out the RAM to 640 KB, and came packaged with the official PS/2 Mouse, Windows 2.0, and four blank floppy disks.
The PS/2 port is a 6-pin mini-DIN connector used for connecting keyboards and mice to a PC compatible computer system. Its name comes from the IBM Personal System/2 series of personal computers, with which it was introduced in 1987.
The Personal System/2 Model 30 and Personal System/2 Model 30 286 are IBM's entry-level desktop computers in their Personal System/2 (PS/2) family of personal computers. As opposed to higher-end entries in the PS/2 line which use Micro Channel bus architecture, the Model 30 features an Industry Standard Architecture bus, allowing it to use expansion cards from its direct predecessors, the PC ...
The Personal System/2 Model 25 and its later submodels the 25 286 and 25 SX are IBM's lowest-end entries in the Personal System/2 (PS/2) family of personal computers. Like its sibling the Model 30, the Model 25 features an Industry Standard Architecture bus, allowing it to use expansion cards from its direct predecessors, the PC/XT and the PC/AT—but not from higher entries in the PS/2 line ...
Badge of the PS/2 Model 50 Z. The Personal System/2 Model 50 is a midrange desktop computer in IBM's Personal System/2 (PS/2) family of personal computers. First released in April 1987, the Model 50 features an Intel 80286 processor running at a clock speed of 10 MHz.
The PS/2 Model 80 was the highest-end PS/2 in the original 1987 line-up and was IBM's first PC based on the 386 processor. The Model 80 received several updates over the course of its lifespan, increasing the computer's hard drive capacity as well as the clock speed of its processor and the maximum supported RAM .