Difference between revisions of "Operating system"
Karl Jones (Talk | contribs) (Application software) |
Karl Jones (Talk | contribs) (etc) |
||
| Line 9: | Line 9: | ||
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or be interrupted by it. | For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or be interrupted by it. | ||
| − | Operating systems are found on many devices that contain a computer—from cellular phones and video game consoles to web servers and supercomputers. | + | Operating systems are found on many devices that contain a computer—from cellular phones and video game consoles to [[Web server|web servers]] and supercomputers. |
| − | == External | + | == External links == |
* [http://en.wikipedia.org/wiki/Operating_system Operating system] @ Wikipedia | * [http://en.wikipedia.org/wiki/Operating_system Operating system] @ Wikipedia | ||
Revision as of 18:28, 4 June 2015
An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs.
The operating system is an essential component of the system software in a computer system.
Application programs usually require an operating system to function.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or be interrupted by it.
Operating systems are found on many devices that contain a computer—from cellular phones and video game consoles to web servers and supercomputers.
External links
- Operating system @ Wikipedia
