QED (text editor)

For the Latin proverb commonly put at the end of mathematical explanations, see Quod erat demonstrandum.
Developer(s)Butler Lampson, L. Peter Deutsch, Dana Angluin
Initial release1967; 57 years ago (1967)[1]
Operating systemBerkeley Timesharing System
PlatformSDS 940
Available inEnglish
TypeText editor

QED is a line-oriented computer text editor that was developed by Butler Lampson and L. Peter Deutsch for the Berkeley Timesharing System running on the SDS 940. It was implemented by L. Peter Deutsch and Dana Angluin between 1965 and 1966.[2][3]

QED (for "quick editor")[4] addressed teleprinter usage, but systems "for CRT displays [were] not considered, since many of their design considerations [were] quite different."[5]

  1. ^ "A History of UNIX before Berkeley".
  2. ^ Lampson, Butler (January 12, 2007), "Systems", Microsoft Research, archived from the original on 2008-04-13, retrieved 2008-04-05.
  3. ^ cf. Angluin, Dana C.; Deutsch, L. Peter (March 26, 1968), Reference Manual: Q. E. D. Time-Sharing Editor (PDF), Washington: Office of Secretary of Defence, archived (PDF) from the original on 2017-12-01.
  4. ^ van Dam, Andries; Rice, David E. (1971), "On-line Text Editing: A Survey", ACM Computing Surveys, 3 (3): 93–114, doi:10.1145/356589.356591, S2CID 3142185.
  5. ^ Deutsch, L. Peter; Lampson, Butler W. (1967), "An online editor", Communications of the ACM, 10 (12): 793–799, 803, doi:10.1145/363848.363863, p. 793.