page_title: TSS (operating system)
hierarchical_section_title: TSS (operating system)
caption_attribution_description: English: Computing Center staff member Mike Alexander sitting at the console of the IBM S/360 Model 67 Duplex mainframe computer at the North University Building on the main campus of the University of Michigan in Ann Arbor, Michigan, USA sometime between 1968 and 1971.
context_page_description: The IBM Time Sharing System TSS/360 is a discontinued early time-sharing operating system designed exclusively for a special model of the System/360 line of mainframes, the Model 67. Made available on a trial basis to a limited set of customers in 1967, it was never officially released as a supported product by IBM. TSS pioneered a number of novel features, some of which later appeared in more popular systems such as MVS. TSS was migrated to System/370 and 303x systems, but despite its many advances and novel capabilities, TSS failed to meet expectations and was eventually canceled. TSS/370 was used as the basis for a port of UNIX to the IBM mainframe. TSS/360 also inspired the development of the TSS-8 operating system.
context_section_description: The IBM Time Sharing System TSS/360 is a discontinued early time-sharing operating system designed exclusively for a special model of the System/360 line of mainframes, the Model 67. Made available on a trial basis to a limited set of customers in 1967, it was never officially released as a supported product by IBM. TSS pioneered a number of novel features, some of which later appeared in more popular systems such as MVS. TSS was migrated to System/370 and 303x systems, but despite its many advances and novel capabilities, TSS failed to meet expectations and was eventually canceled. TSS/370 was used as the basis for a port of UNIX to the IBM mainframe. TSS/360 also inspired the development of the TSS-8 operating system.
caption: IBM System/360 Model 67-2. This is the computer model on which TSS/360 would have run
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