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Oprating Essay

  • Submitted by: ramila
  • on March 6, 2012
  • Category: English
  • Length: 10,538 words

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Below is an essay on "Oprating" from Anti Essays, your source for research papers, essays, and term paper examples.

Operating system
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| This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (October 2011) |

Operating systems |
Common features |
    * Process management   * Interrupts   * Memory management   * File system   * Device drivers   * Networking (TCP/IP, UDP)   * Security (Process/Memory protection)   * I/O |
    * v   * t   * e |
An operating system (OS) is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is a vital component of the system software in a computer system. Application programs require an operating system which are usually separate programs, but can be combined in simple systems.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting 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 application programs and the computer hardware,[1][2] although the application code is usually executed directly by the hardware and will frequently call the OS or be interrupted by it. Operating systems are found on almost any device that contains a computer—from cellular phones and video game consoles to supercomputers and web servers.
Examples of popular modern operating systems include Android, iOS, Linux, Mac OS X, BSD, Microsoft Windows,[3] and Z/OS. All these, except Windows and Z/OS, share roots in Unix.
Contents[hide]     * 1 Types   * 2 Summary   * 3 History       * 3.1 Mainframes       * 3.2 Microcomputers   * 4 Examples of operating systems       * 4.1 Unix and Unix-like operating systems         * 4.1.1 BSD and its descendants             * Mac OS X...

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