static ram

static random-access memory
SRAM
static RAM

   <storage> (SRAM) {Random-access memory} in which each bit of
   storage is a bistable {flip-flop}, commonly consisting of
   cross-coupled {inverters}.  It is called "static" because it
   will retain a value as long as power is supplied, unlike
   {dynamic random-access memory} (DRAM) which must be regularly
   refreshed.  It is however, still {volatile}, i.e. it will lose
   its contents when the power is switched off, in contrast to
   {ROM}.

   SRAM is usually faster than DRAM but since each bit requires
   several transistors (about six) you can get less bits of SRAM
   in the same area.  It usually costs more per bit than DRAM and
   so is used for the most speed-critical parts of a computer
   (e.g. {cache} memory) or other circuit.

   (1995-04-22)