Magnetic tape
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Magnetic tape – used to store large amounts of data especially as it is very cheap.
It comes in the form a reel or cartridge and is made of plastic that is coated with a metal oxide. The tape is divided into parallel rows called tracks. The most common tape is one with nine tracks. Track nine is called the Parity track. Each group of nine is called a frame. Tapes are used for i. Backing up the hard drive. ii. Data entry using key-to-tape iii. Archiving data |