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Main Parts Of A Computer

Discussion in 'Hardware' started by Fazly Mohamed, Feb 23, 2004.

  1. Main Parts Of A Computer

    Processor (CPU) - The part of the computer that handles all processes
    and instructions supplied by memory unit (RAM)

    Memory (RAM) - Random Accessed Memory. The area of the computer that
    holds the instructions (processes) and information system gives it.
    When you turn the computer off, everything in RAM disappears.

    Read Only Memory (ROM) - A chip or disk that holds information that
    cannot be changed. Ex CD-ROM, DVD-ROM

    Disk drive - A mechanical device that you use to transfer information
    back and forth between the computer's memory and a disk.

    Floppy disk (3.5") - A magnetically coated disk on which information
    can be stored and retrieved. Capacity is 1.44MB - requires a
    Floppy-Drive

    Zip disk - A magnetically removable coated disk on which information
    can be stored and retrieved. Capacity is 100 or 250MB or more -
    requires a zip-drive

    Hard disk - A large capacity storage area that offers access to store
    and retrieve information, very slow compare to RAM.

    Monitor - A screen that displays the information in the computer.

    Keyboard - A device used to enter data and issue commands to the
    computer.

    Printer or Scanner - A devices that help to make hard copies o scan
    documents into the computer.

    Mouse - A small, hand-held device used to control the pointer on the
    screen.

    Software - Instructions that tell your computer how to perform a task.
    Software is stored on the disks in program files. Software cannot be
    seen or touched. There are two main kinds of software:
    * application software and
    * system software

    Application software (program) - Software that does specific task,
    such as word processing. (Word, Power Point)

    System software - Software that the computer system or OS operating
    system.

    Firmware - A kind of system software - instructions that are built
    into the
    computer system on ROM chips.

    Operating System (OS) - software that acts as a link between you,
    application software (programs), and hardware. (Windows 98, Mac OS 9,
    Linux 7.2)

    Graphical User Interface (GUI) - A phrase that is commonly used to
    describe Microsoft Windows and other OS that use pictures to help you
    communicate with the computer.

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    Reference: http://pt3.hunter.cuny.edu/tutorials/computer_basic/basic.htm
     
    Fazly Mohamed, Feb 23, 2004
    #1
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