See static RAM.
(acronym for static random-access memory)
Computer memory device in the form of a silicon chip used to provide immediate access memory. SRAM is faster but more expensive than DRAM (dynamic random-access memory).
DRAM loses its contents unless they are read and rewritten every 2 milliseconds or so. This process is called refreshing the memory. SRAM does not require such frequent refreshing.
Static random-access memory