slovodefinícia
operating system
(encz)		operating system,operační systém [it.] n:
operating system
(wn)		operating system
n 1: (computer science) software that controls the execution of
computer programs and may provide various services [syn:
operating system, OS]
operating system
(foldoc)		operating system

(OS) The low-level software which handles
the interface to peripheral hardware, schedules tasks,
allocates storage, and presents a default interface to the
user when no application program is running.

The OS may be split into a kernel which is always present
and various system programs which use facilities provided by
the kernel to perform higher-level house-keeping tasks,
often acting as servers in a client-server relationship.

Some would include a graphical user interface and {window
system} as part of the OS, others would not. The {operating
system loader}, BIOS, or other firmware required at {boot
time} or when installing the operating system would generally
not be considered part of the operating system, though this
distinction is unclear in the case of a {rommable operating
system} such as RISC OS.

The facilities an operating system provides and its general
design philosophy exert an extremely strong influence on
programming style and on the technical cultures that grow up
around the machines on which it runs.

Example operating systems include 386BSD, AIX, AOS,
Amoeba, Angel, Artemis microkernel, BeOS, Brazil,
COS, CP/M, CTSS, Chorus, DACNOS, DOSEXEC 2,
GCOS, GEORGE 3, GEOS, ITS, KAOS, Linux, LynxOS,
MPV, MS-DOS, MVS, Mach, Macintosh operating system,
Microsoft Windows, MINIX, Multics, Multipop-68,
Novell NetWare, OS-9, OS/2, Pick, Plan 9, QNX,
RISC OS, STING, System V, System/360, TOPS-10,
TOPS-20, TRUSIX, TWENEX, TYMCOM-X, Thoth, Unix,
VM/CMS, VMS, VRTX, VSTa, VxWorks, WAITS.

{FAQ
(ftp://src.doc.ic.ac.uk/usenet/news-info/comp.os.research)}.

Usenet newsgroup: news:comp.os.research.

[Jargon File]

(1999-06-09)
operating system
(jargon)		operating system
n.

[techspeak] (Often abbreviated ‘OS’) The foundation software of a machine;
that which schedules tasks, allocates storage, and presents a default
interface to the user between applications. The facilities an operating
system provides and its general design philosophy exert an extremely strong
influence on programming style and on the technical cultures that grow up
around its host machines. Hacker folklore has been shaped primarily by the
Unix, ITS, TOPS-10, TOPS-20/TWENEX, WAITS, CP/M, MS-DOS,
and Multics operating systems (most importantly by ITS and Unix). See
also timesharing.
podobné slovodefinícia
disk operating system
(encz)		disk operating system,diskový operační systém luke
disk operating system
(wn)		disk operating system
n 1: an operating system that is on a disk [syn: DOS, {disk
operating system}]
microsoft disk operating system
(wn)		Microsoft disk operating system
n 1: an operating system developed by Bill Gates for personal
computers [syn: MS-DOS, {Microsoft disk operating
system}]
unix operating system
(wn)		UNIX operating system
n 1: trademark for a powerful operating system [syn: UNIX,
UNIX system, UNIX operating system]
basic operating system
(foldoc)		Basic Operating System

(BOS) An early [when?] IBM {operating
system}.

According to folklore, BOS was the predecessor to TOS on the
IBM 360 and it was IPL'd from a card reader. It may
have been intended for very small 360's with no disks and
limited tape drives.

BOS died out really early [when?] as disks such as the 2311
and 2314 became common with the IBM 360, whereas disks had
been a real luxury on the IBM 7090.

(1999-01-29)
convergent technologies operating system
(foldoc)		Convergent Technologies Operating System
BTOS
STARSYS

(CTOS, BTOS, STARSYS) /see-toss/ A modular,
message-passing, multi-process based operating system.

Convergent Technologies' first product was the IWS
(Integrated Workstation) based on the Intel 8086, which had
CTOS as its operating system. It is a modular operating
system with built-in local area networking. CTOS supports
multiple processes or threads and message-based
inter-process communication.

Companies which licensed CTOS included Burroughs (BTOS) and
Bull (STARSYS). The largest customer was Unisys, with
whom Convergent Technologies merged to become one company in
1988. CTOS had over 800,000 users worldwide.

CTOS ran on Intel Pentium computers, and could run
concurrently with Microsoft Windows NT.

Support for existing customers lasted at least until 2001.
Major customers included police forces, banks and airlines.

["Exploring CTOS", Miller E., Crook J., Loy J. - Prentice
Hall, ISBN 0-13-297342-1, 1991].

(1996-09-24)
disk operating system
(foldoc)		Disk Operating System

(DOS) The original disk operating system
from IBM.

DOS was the low-end OS of choice on the IBM 360, the
high-end system was called just "OS". DOS had a smaller
kernel and less functionality than OS and could run on the
typical 32K 360/30 and 64K 360/40 class machines.

DOS was a successor to TOS.

(1999-01-20)
disk operating system

(DOS) The name of a number of {operating
systems} which include facilities for storing files on disk,
often used to refer to Microsoft DOS. Such a system must
handle physical disk I/O, the mapping of file names to disk
addresses and protection of files from unauthorised access (in
a multi-user system).

A DOS should present a uniform interface to different storage
device such as floppy disks, hard disks and {magnetic
tape} drives. It may also provide some kind of locking to
prevent unintentional simultaneous access by two processes to
the same file (or record).

(1998-07-08)
distributed network operating system
(foldoc)		Distributed Network Operating System
DNOS

(DNOS) A proprietary operating system for
Texas Instruments 990-series minicomputers.

(1996-04-01)