Static random-access memory

The Static Random Access Memory (Static RAM) is a high speed memory. Static RAM is a type of RAM that gets its data without an external refresh. For as long as power is supplied to the circuit.

SRAM has many differences to Dynamic RAM (DRAM). The first of all is duty to refresh memory many time per second to hold its data contents. The second one is that SRAMs are also used for specific applications within the PC, where their strengths outweigh their weaknesses compared to DRAM.

Positive differences

RAM normally requires refreshing circuitry to keep the information contained on the chip from being lost. SRAMs do not require constant processes to keep the contained data intact while the RAM has power.

Changing Static RAM is also faster than DRAM.

Negative differences

A SRAM is more expensive than DRAM. SRAMs take up much more space than DRAMs. That is the reason why is SRAM more expensive then DRAM.

Summary

Discussion of how processors are manufactured; this process is similar (but simplified somewhat) for making memory circuits.

SRAM is manufactured in a way rather similar to how processors are: highly-integrated transistor patterns photo-etched into silicon. Each SRAM bit is composed of between four and six transistors. Which is why SRAM takes up much more space compared to DRAM. To compare with DRAM. DRAM has only one transistor plus a capacitor. SRAM chip is comprised of thousands or millions of identical cells. Because is much easier to make than a CPU, (a large die with a non-repetitive structure), RAM chips are far less expensive than processors.

Other websites

• Uses of SRAM by Intel Corp.

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