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O que (quem) é IBM XT - definição

IBM PC MODEL CONTAINING 3270 TERMINAL EMULATION HARDWARE

IBM 5271 Personal Computer XT; IBM 3270 AT; IBM 5281 Personal Computer/AT; 3270 PC; PC/GX; PC/G; IBM 5271; IBM 3270 XT; IBM 5273

IBM PC XT

PERSONAL COMPUTER MODEL

IBM PC-XT; PC/XT; PC XT; PC-XT; IBM XT; XT class; IBM/XT; IBM 5160 Personal Computer XT; IBM 5160; IBM 5162 Personal Computer XT/286; IBM PC/XT; XT Computer; IBM XT 286; IBM PC XT; IBM model 5160; 286 XT; IBM PC 5160; IBM Personal Computer/XT; IBM 5162; XT clones

<computer> An IBM PC with a (slow) hard disk. The XT was released in March 1983. It had an Intel 8088 CPU. The XT/370, released in October 1983, added IBM 370 mainframe emulation, and the XT 286 followed in September 1986 with an Intel 80286 CPU [Why?]. (1996-05-21)

PC-based IBM mainframe-compatible systems

OVERVIEW ABOUT PC-BASED IBM-COMPATIBLE MAINFRAMES

S/390 Integrated Server; PC-based IBM-compatible Mainframes; Personal Computer XT/370; IBM 7437; XT/370; PC-XT/370; IBM Personal Computer XT/370; IBM Personal Computer AT/370; Personal Computer AT/370; AT/370; IBM 7437 VM/SP Technical Workstation; 7437 VM/SP Technical Workstation; IBM Personal System/370; Personal System/370; IBM PS/370; PS/370; IBM XT/370; IBM AT/370; PC-based IBM-compatible mainframes

Since the rise of the personal computer in the 1980s, IBM and other vendors have created PC-based IBM-compatible mainframes 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.

https://en.wikipedia.org/wiki/PC-based_IBM_mainframe-compatible_systems

IBM 4300

LINE OF IBM MAINFRAMES SOLD FROM 1979 THROUGH 1992

Ibm 4300 series; 43xx; IBM 4300 series; IBM 4381; 4381; IBM 4341; IBM ES/4381; IBM 4361; IBM 43xx

The IBM 4300 series are mid-range systems compatible with System/370 that were sold from 1979 through 1992. They featured modest electrical and cooling requirements, and thus did not require a data center environment.

https://en.wikipedia.org/wiki/IBM_4300

Wikipédia

IBM 3270 PC

The IBM 3270 PC (IBM System Unit 5271), released in October 1983, is an IBM PC XT containing additional hardware that, in combination with software, can emulate the behaviour of an IBM 3270 terminal. It can therefore be used both as a standalone computer, and as a terminal to a mainframe.

IBM later released the 3270 AT (IBM System Unit 5273), which is a similar design based on the IBM PC AT. They also released high-end graphics versions of the 3270 PC in both XT and AT variants. The XT-based versions are called 3270 PC/G and 3270 PC/GX and they use a different System Unit 5371, while their AT counterparts (PC AT/G and PC AT/GX) have System Unit 5373.

https://en.wikipedia.org/wiki/IBM 3270 PC