Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Idioms, Wikipedia.
Os, symbol for the element osmium.
The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
[obsolete, ITS], an output spy. See "OS and JEDGAR".
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.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.