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    chapter1:storage devices

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    haythem

    Messages : 1
    Date d'inscription : 17/03/2010
    Age : 29

    chapter1:storage devices

    Message  haythem le Mer 19 Mai - 20:14

    Storage devices


    1-présentation


    The
    Storage devices (mass Storage)are used
    to store data permanently. they are physical media on which data is stored . these
    materials can be transported from a computer to another . among the storge
    media we can mention the hard disk the floppy disk CD-ROM DVD … a storage
    medium is characterize by name its size and type.




    CD








    Its capacity of storage is equal to 700

    Floppy disk























    Its hasa limited capacity(1.44)

    Flash disk



    It’s a removable support . its has many capacities
    of storage

    Hard disk



    It is here that all of your programs and data are
    stored.





    2-unites of measure


    1kilobyte(kb)= byte


    1megabyte= kilobyte


    1gigabyte= megabyte

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