tape operating system

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tape operating system [′tāp ′äp·ə‚rād·iŋ ‚sis·təm]

(computer science)

A computer operating system in which source programs and sometimes incoming data are stored on magnetic tape, rather than in the computer memory. Abbreviated TOS.

(operating system)

Tape Operating System - (TOS) An IBM operating system for System 360, used in the early days around 1965 to support the IBM 360 model 30 et al. TOS was a predecessor to IBM's Disk Operating System.

TOS died out really early as disks such as the 2311 and 2314 became common with the IBM 360 whereas thet had been a real luxury on the IBM 7090.

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