persistent memory ==>
non-volatile storage
<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)
Nearby terms:
non-volatile « non-volatile memory « Non-Volatile
Random Access Memory « non-volatile storage »
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