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Meaning of TAPE OPERATING SYSTEM

 
Computing Dictionary
 
 Definition: 

(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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