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Storage and retrieval
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Storage and Retrieval
When work is done a computer ( eg word processing ) it is held in the computer’s main memory and it is lost when the computer is switched off. ... In order to keep the work permanently it must be saved and this requires some sort of secondary or backup storage device. ... The most common type of storage is magnetic disk – either an internal hard disk or an eternal floppy disk (shown on the left). ... Before disk drives became widely available, magnetic tape was used for secondary storage. ... Bytes offer a useful measure of memory and storage space, but because large amounts are required kilobytes (Kb) and megabytes (Mb) are used.
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Paper Information
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Title: Storage and retrieval
Words: 494
Rating: None
Pages: 2
submitted by: kj9999
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