Compatible time sharing system

What is a Compatible Time Share System?
The Compatible Time Sharing System (CTSS) was developed at the MIT Computational Center in the 1960s and 1970s. The design of the CTSS represents the beginning of the idea that operating systems can work on multiple threads or 'multitask'.

Das ursprüngliche kompatible Time-Sharing-System war abwärtskompatibel mit dem Fortran-Monitorsystem. Es funktionierte auf einem IBM 7094 Mainframe-Computer mit zwei 32K-Bänken aus Core memory. Die zweite Bank wurde für die Timesharing-Implementierung verwendet. CTSS wurde an Drucker, Lochkartenleser und Bandlaufwerke angeschlossen.

Time sharing means that the system can allocate resources for two tasks or processes at the same time. This was a huge step forward as previous mainframes and computer systems only worked linearly on one process. Time-sharing and multi-process and multi-thread systems have paved the way for the most sophisticated operating systems of the past three decades.

Eventually, in the 1980s, designs like CTSS were superseded by more modern MS-DOS systems and modern Windows and OSx systems that are in use today.

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