XT - technical definition

(1) (EXtended Technology) The first IBM PC with a hard disk, introduced in 1983. It used the same 8088 CPU as the original PC but included a whopping 128KB of RAM and a 10MB hard drive. See PC.

(2) (Xt) See X toolkit.

(3) (XT) An open source XML parser written in Java by James Clark, a specialist in SGML/XML. For information, visit www.jclark.com. See XSLT.