IBM PC XT (type 5160) or simply XT (for eXtended Technology), presented to 8. March 1983, is a slight advancement IBM PC. Both devices, PC and PC XT, are often summarized under the contraction PC/XT and differentiated in such a way by the technically clearly changed successor IBM PC RK.

Technology

It possesses a non removable disk (MFM) with a capacity of 10 MT, a accordingly larger power pack, a ST-506-kompatiblen hard disk controller contrary to the original PC, as well as more card locations for main memories and XT-bus-extension cards on the motherboard. In addition he was delivered with the newer PC DOS 2,0.

XT-variants

The moreover one there was the XT than IBM 3270 PC with hardware for the emulation of a terminal of the type IBM 3270.

IBM PC/370 the emulation of an older IBM Mainframe of the row System/370 made possible by auxiliary hardware, which made a "“computer available in the computer"”.

A later model - which XT 286 from 2 September 1986 (type 5162) - possesses when CCU represents Intel 80286 in place of 8088, and so a favorable alternative to the successor IBM PC RK, which however already 1984 appeared. Although the 80286 contrary to the RK with only 6 MHz was clocked instead of of 8 MHz, it achieved a higher speed by the faster main memory, since the CCU did not have to wait for the memory. It possessed also the RK floppy disk drive (5,25 " with 1.2 MT in half overall height).

IBM manufactured outer-grounds the electromagnetic reflection (ElectroMagnetically Resistant) XT for military and diplomatic operational areas. It was secured by careful screen measures against "“hearing"” the electromagnetic radiation after American TEMPEST standard.

Add-on unit

The PCs XT and XT 286 could be increased with the expansion unit Model 002 (add-on unit) around an identical housing with place for additional drive assemblies and extension cards. In addition into the XT a map with driver components was put, which connected the bus of the XT with that to the add-on unit by a cable. For the original PC there was the same option.

Articles in category "IBM PC XT"

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Related Websites

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• IBM PC - Wikipedia, the free encyclopedia
  The original PC failed miserably in the home market, but was widely used in business. The "IBM Personal Computer XT" was an enhanced machine designed for ...


• OLD-COMPUTERS.COM : The Museum
  The IBM PC XT is the successor of the IBM PC. The XT stands for EXtended Technology and was introduced in early 1983. It has enhanced features: CGA graphic ...


• OLD-COMPUTERS.COM : The Museum
  Although the IBM PC XT was launched in 1983, IBM continued production of both units, in various configurations, for several years. ...


• OLD-COMPUTERS.COM : The Museum
  Contrary to the PC XT, it has a saved clock and a calendar. James G. Davis reports: Only a few were made-maybe 20000. Someone with IBM told me that they ...


• The IBM PC-XT
  PC XT photo I got an IBM PC XT around 1985. A lot of us at IBM were getting XT's to log on to our office systems from home. Of course then the office system ...