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Meaning of COMPATIBLE TIMESHARING SYSTEM

 
Computing Dictionary
 
 Definition: 

(CTSS) One of the earliest (1963) experiments in the design of interactive time-sharing operating systems. CTSS was ancestral to multics, unix, and its. It was developed at the mit Computation Center by a team led by Fernando J. Corbato. CTSS ran on a modified ibm 7094 with a second 32K-word bank of memory, using two 2301 drums for swapping. remote access was provided to up to 30 users via an ibm 7750 communications controller connected to dial-up modems.

The name its (Incompatible time-sharing System) was a hack on CTSS, meant both as a joke and to express some basic differences in philosophy about the way I/O services should be presented to user programs.

 

 

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