Os

(chemistry)

osmium

OS

(1)

operating system.

OS

(2)

[obsolete, ITS], an output spy. See "OS and JEDGAR".

OS

(operating system)

An operating system from IBM for their System/360 line of hardware announced in 1964. OS was planned with several flavours that were supposed to be compatible. OS was late, memory hungry and not able to reach the marketing objectives of IBM for the 360/30, the planned successor of the IBM 1401. IBM then decided to design a new operating system for the low end machines which they called DOS/360.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

OS

(Operating System) The master control program in a computer or mobile device. The O-S acronym has been part of the names of various operating systems. Microsoft used DOS for many years in the PC, and Apple used OS 8, OS 9 and OS X in the Mac. For the major functions operating systems perform, see operating system. Some of the operating systems in this encyclopedia that have O-S in their name are TOS, DOS, PC-DOS, MS-DOS, DR-DOS, macOS, Mac OS X, iOS, OS/390 and OS/400.

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Mentioned in

References in periodicals archive

Lachance and O.S. Mitchell, "Guaranteeing Defined Contribution Pensions: The Option to Buy-back a Defined Benefit Promise," NBER Working Paper No.

Saving and spending retirement wealth. (Research Summaries)

Police arrested the defendant shortly after they identified him from the tag that O.S. had removed from the glass.

Staged vomiting saved woman from being raped by driver in backseat of taxi

"I ask the court to adjourn the case because I want to appoint a lawyer to defend me," O.S. told Presiding Judge Al Saeed Mohammad Barghout.

An Emirati police officer testified that he discovered the drug hidden in a pocket of the pants that O.S. was carrying to a detainee.

Student admits to possessing heroin

The clerk, 20, said: "I paid Dh500 for my drink and O.S. gave me the balance, which I immediately put in my pocket ...

Bootlegger denies stabbing clerk

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