Non-volatile random-access memory: Difference between revisions

Revision as of 15:24, 20 May 2021

Revision as of 17:37, 28 November 2021

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{{See also|Nonvolatile BIOS memory}}

{{Memory types}}

'''Non-volatile random-access memory''' ('''NVRAM''') is [[random-access memory]] that retains data without applied power. This is in contrast to [[dynamic random-access memory]] (DRAM) and [[static random-access memory]] (SRAM), which both maintain data only for as long as power is applied, or such forms of [[Sequential access memory|sequential-access memory]] such as [[magnetic tape]], which cannot be randomly accessed but which retains data indefinitely without electric power.

[[Read-only memory]] devices can be used to store system [[firmware]] in [[embedded system]]s such as an automotive ignition system control or home appliance. They are also used to hold the initial processor instructions required to [[Bootstrapping|bootstrap]] a computer system. Read-write memory can be used to store calibration constants, passwords, or setup information, and may be integrated into a [[microcontroller]].