<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?].
Try this search on Wikipedia, OneLook, Google
Nearby terms: IBM PC « IBM PC AT « IBM PCjr « IBM PC XT » IBM System/36 » IBM Systems Engineer » IBM zSeries