The Dartmouth Time-Sharing System, or DTSS for short, is a discontinued time-sharing operating system, the first large-scale, to be implemented successfully. DTSS was inspired by a PDP-1-based time-sharing system at Bolt, Beranek and Newman. In 1962, John Kemeny and Thomas Kurtz at Dartmouth College submitted a grant for the development of a new time-sharing system to NSF (funded in 1964). Its implementation began in 1963, by a student team under the direction of Kemeny and Kurtz with the aim of providing easy access to computing facilities for all members of the college. On May 1, 1964, at 4:00 a.m., the system began operations. It remained in operation until the end of 1999. DTSS was originally implemented to run on a GE-200 series computer with a GE DATANET-30 as a terminal processor th