QED (text editor)

QED
DevelopersButler Lampson, L. Peter Deutsch, Dana Angluin
Initial release1967, 58–59 years ago
Operating systemBerkeley Timesharing System
PlatformSDS 940
Available inEnglish
TypeText editor

QED (short for quick editor) is a line-oriented 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.

QED addressed teleprinter usage. Support for a CRT display was not added since design considerations for such hardware differ significantly from a teleprinter.