Static random-access memory
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Static Random Access Memory (Static RAM) is a high speed memory. Static RAM is a type of RAM that keeps the data that's fed to it, without it having to be rewritten over and over.
SRAM has many differences to Dynamic RAM (DRAM). The first of all is that for DRAMs, to keep the data that is stored from being lost, it has to be refreshed, by writing the same data to it over and over again with special circuitry, much like a pen that dispenses disappearing ink onto paper. The second difference is that SRAMs are also used for specific applications within the PC, where their strengths outweigh their weaknesses compared to DRAM.
Like other semiconductor chips, SRAM chips are made by Photolithography.
Positive differences
SRAM does not need to be refreshed, like words that have been written with a pencil on paper.
Changing Static RAM is also faster than DRAM.
Negative differences
SRAM is more expensive than DRAM.
SRAMs take up much more space than DRAMs.
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