(1) (
Enhanced
Definition) See
EDTV.
(2) (ed) (
EDitor) A Unix line-oriented text editor written by Ken Thompson in the early 1970s that continues to be included in most versions of Unix/Linux. Ed gleaned functions from the qed editor developed by the University of California at Berkeley. It was followed by the somewhat more user friendly ex (EXtended) editor. Ex added a full-screen, so-called "visual" capability that was subsequently incorporated into the vi editor (see
vi).
(3) (ED) (
Extra High
Density) See
super floppy.