翻訳と辞書
Words near each other
・ second generation
・ second generation computer
・ second generation language
・ second level cache
・ second normal form
・ second-order lambda-calculus
・ second-system effect
・ secondary cache
・ secondary damage
・ secondary key
secondary storage
・ sector interleave
・ sector interleaving
・ sector map
・ sector mapping
・ secure file transfer protocol
・ secure hash algorithm
・ secure multipurpose internet mail extensions
・ secure shell
・ secure sockets layer


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secondary storage : FOLDOC
secondary storage
Any non-volatile storage medium that is not directly accessible to the processor. Memory directly accessible to the processor includes main memory, cache and the CPU registers. Secondary storage includes hard drives, magnetic tape, CD-ROM, {DVD drives}, floppy disks, punch cards and paper tape.
Secondary storage devices are usually accessed via some kind of controller. This contains registers that can be directly accessed by the CPU like main memory ("memory mapped"). Reading and writing these registers can cause the device to perform actions like reading a block of data off a disk or rewinding a tape. See also DMA.
Programs and data stored in secondary storage must first be loaded into main memory before the processor can use them.
(1997-11-05)



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