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Floppy disks are so called because they are made of a flexible plastic material, which lends itself to the surface magnetization.
Hard disks work as well as floppy disks, but they have their own important advantages: they can contain much more data and rotated at a higher speed.
The speed at which hard drives are data, called access time or the seek time.
24 It is necessary to distinguish between access speed and data transfer rate. The memory device of flash memory known as thumb or pen drive is connected via
USB port. USB flash drives lets you protect data and easily transfer them.
27 Portable DVD players usually run on batteries, have a wide screen and provide multi-format playback.
Instant Memory is non-volatile.
29 The first storage rule is to create backup copies of all important files.
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