system> The first commercial time-sharingsystem, created by Dartmouth College and sold by General Electric around 1967. GE' s Information service Divsion (IsD) marketed DTss which was running on a system called GE-265 (a combination of the front-end processor the Datanet-30 and the GE-235). DTss was ported (and significantly improved by GE IsD around 1965-1966 on a combination of DN-30 and GE-635). This proprietary system, called Mk-II, later improved by GE and renamed Mk-III, isstill working today (1997) as part of the GE service bureau that also includesIBM and Unix computers. (1997-09-16)