Both DRAM and SRAM store information in binary by using very small electronic components. Both are volatile (need electrical current flowing to keep the negative and positive charged components stay that way).
For SRAM, each bit is composed of between four and six transistors, the parts that hold information, which is why SRAM takes up much more space compared to DRAM. To compare with SRAM, DRAM has only one transistor plus a capacitor acting like a miniature rechargeable battery).
- SRAM does not need to be refreshed.
- Changing Static RAM is faster than DRAM.
- SRAM is more expensive than DRAM.
- SRAMs take up more space and electricity.
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