Tape Operating System


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.

Tape Operating System

(operating system)(TOS) An IBM operating system forSystem 360, used in the early days around 1965 to supportthe IBM 360 model 30 et al. TOS was a predecessor to IBM'sDisk Operating System.

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