Time Sharing
A computer environment that allows multiple users to work independently at the same time, usually from separate terminals. Time sharing resembles multitasking (one user, many tasks) in that the processor takes turns between the different tasks, giving each task a tiny amount of time, so that it appears the different tasks are running at the same time. The first time sharing computer was developed at MIT in 1961.
Articles on KurzweilAI.net that refer to Time Sharing
The Age of Intelligent Machines: Chronology By Ray KurzweilMan-Computer Symbiosis By J.C.R. Licklider