Storage devices презентация

Storage This is a piece of hardware which can store data outside the processor in a form which is suitable for input back into the processor. This is needed

Слайд 1Storage devices


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Storage
This is a piece of hardware which can store data

outside the processor in a form which is suitable for input back into the processor. This is needed to save the information for future if the processor is switched off, and to transfer the files from one machine to another.

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Types of storage devices


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Optical Storage Devices
Optical media is more reliable than tape. Data is

written to optical media, such as CDs and DVDs.
Advantages:
small and portable
Cheap to produce
Large market of music, movie and game


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Magnetic storage devices are:
Magnetic tape works on similar lines to the

hard disk, using a magnetic medium. It is cheaper than disk.
Floppy disk consists of a plastic case. Inside that case is a very thin piece of plastic that is coated with microscopic iron particles. Floppy disks are the smallest type of storage, holding only 1.44mb.
Hard disk drive – magnetic disk which holds information and faster than any other storage devices.

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Flash storage is a type of drive that uses memory card

and flash drive to keep data.
Memory card is a small storage medium used to store data such as pictures, audio and video.

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