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The IBM Personal Computer XT (model 5160, often shortened to PC/XT) is the second computer in the IBM Personal Computer line, released on March 8, 1983. [1] Except for the addition of a built-in hard drive and extra expansion slots, it is very similar to the original IBM PC model 5150 from 1981.
Industrial version of the IBM PC XT [33] [34] Industrial Computer 5531: 5531-011 April 1984: Unknown ISA, 8-bit 8 3 Intel 8088: 4.77 256 KB 640 KB 1.2 MB none Industrial version of the IBM PC XT [33] [34] [35] Industrial Computer 5531: 5531-021 May 1985: Unknown ISA, 8-bit 8 3 Intel 8088: 4.77 256 KB 640 KB 1.2 MB 20 MB Industrial version ...
Since the rise of the personal computer in the 1980s, IBM and other vendors have created PC-based IBM mainframe-compatible systems which are compatible with the larger IBM mainframe computers. For a period of time PC-based mainframe-compatible systems had a lower price and did not require as much electricity or floor space.
IBM 5160: IBM Personal Computer XT—1983; IBM 5162: IBM Personal Computer XT/286; IBM 5271: IBM 3270 PC—1983; IBM 5160 Model 588: PC XT/370, a PC XT with a special add-in card containing an Intel 8087 math coprocessor and two modified Motorola 68000 chips to execute/emulate the System/370 instructions—1983. IBM 5155: IBM Portable—1984
The original IBM PC included a socket for the Intel 8087 floating-point coprocessor (aka FPU) which was a popular option for people using the PC for computer-aided design or mathematics-intensive calculations. In that architecture, the coprocessor speeds up floating-point arithmetic on the order of fiftyfold.
Collection of the x87 family of math coprocessors by Intel. A floating-point unit (FPU), numeric processing unit (NPU), [1] colloquially math coprocessor, is a part of a computer system specially designed to carry out operations on floating-point numbers. [2] Typical operations are addition, subtraction, multiplication, division, and square root.
ES PEVM (ЕС ПЭВМ) was a Soviet clone of the IBM PC in the 1980s. The ES PEVM models lineup also included analogues of IBM PC XT, IBM PC AT, IBM XT/370.. The computers and software were adapted in Minsk, Belarus, at the Scientific Research Institute of Electronic Computer Machines (НИИ ЭВМ).
The IBM PC AT came with a 192-watt switching power supply, significantly higher than the 130-watt XT power supply. According to IBM's documentation, in order to function properly, the AT power supply needed a load of at least 7.0 amperes on the +5 V line and a minimum of 2.5 amperes on its +12 V line.