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Meaning of NON-VOLATILE STORAGE

 
WordNet Dictionary
 
 Definition: 
[n]  computer storage that is not lost when the power is turned off
 
 Synonyms: nonvolatile storage
 
 Antonyms: volatile storage
 
 See Also: computer memory, computer storage, flash memory, memory, memory board, storage, store

 

 

Computing Dictionary
 
 Definition: 

(NVS, persistent storage, memory) A term describing a storage device whose contents are preserved when its power is off. Storage using magnetic media (e.g. magnetic disks, magnetic tape or bubble memory) is normally non-volatile by nature whereas semiconductor memories (static ram and especially dynamic ram) are normally volatile but can be made into non-volatile storage by having a (rechargable) battery permanently connected.

dynamic ram is particularly volatile since it looses its data, even if the power is still on, unless it is refreshed. An acoustic delay line is a (very old) example of a volatile storage device.

Other examples of non-volatile storage are eeprom, cd-rom, paper tape and punched cards.

 

 

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