| Noun | 1. | non-volatile storage - computer storage that is not lost when the power is turned off Synonyms: nonvolatile storage Antonyms: volatile storage - computer storage that is erased when the power is turned off |
| (storage) | non-volatile storage - (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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