[W/K] :: non-volatile storage

  non-volatile storage
       n : computer storage that is not lost when the power is turned
           off [syn: nonvolatile storage] [ant: volatile storage,
            volatile storage]

  nonvolatile storage
       n : computer storage that is not lost when the power is turned
           off [syn: non-volatile storage] [ant: volatile storage,
            volatile 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.
       
          (2000-05-22)