ATing system> The first commercial time-sharing system, 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, is still working today (1997) as part of the GE service bureau thAT also includes IBM and Unix computers. (1997-09-16)