(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.
[voh-lish-uh n, vuh-] /voʊˈlɪʃ ən, və-/ noun 1. the act of willing, choosing, or resolving; exercise of willing: She left of her own volition. 2. a choice or decision made by the will. 3. the power of willing; will. /vəˈlɪʃən/ noun 1. the act of exercising the will: of one’s own volition 2. the faculty […]
[vol-uh n-ter-ee] /ˈvɒl ənˌtɛr i/ adjective 1. done, made, brought about, undertaken, etc., of one’s own accord or by free choice: a voluntary contribution. 2. of, relating to, or acting in accord with the will: voluntary cooperation. 3. of, relating to, or depending on voluntary action: voluntary hospitals. 4. Law. 5. Physiology. subject to or […]
[non-voh-ter] /nɒnˈvoʊ tər/ noun 1. a person who does not vote. 2. a person who is not eligible to vote. /nɒnˈvəʊtə/ noun 1. a person who does not vote 2. a person not eligible to vote
[non-voh-ter] /nɒnˈvoʊ tər/ noun 1. a person who does not vote. 2. a person who is not eligible to vote. /nɒnˈvəʊtɪŋ/ adjective 1. of or relating to a nonvoter 2. (finance) (of shares) not entitling the holder to vote at company meetings /nɒnˈvəʊtə/ noun 1. a person who does not vote 2. a person not […]