Definition: Data block


A series of data elements handled as one unit. Typically a data block stored on disk is 512 bytes long (synonymous with sector). On tape the block size is normally greater and varies.




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Buffer

A storage device or area on a storage device, which holds data temporarily, until needed for processing or printing. A buffer can also be used to aid communication between two devices with very different processing speeds (such as two modems, or the CPU and the printer).

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