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Differences between DRAM and SRAM?
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Answer Posted / syed murtaza
DRAM stands for dynamic Random Access Memory. In DRAM, individual cells are made by using capacitors. This type of memory is used in most of the computers. In order to maintain data in DRAM chip, it must be refreshed with electric charge frequently (or periodically). Otherwise data stored in DRAM my be lost. During refreshing process, CPU has to wait for writing and reading data to and from the DRAM. Therefor it is slow memory.
SRAM.
SRAM stants for Static Random Access memory. In SRAM, indidual cells are made by using digital gates. Each cell can hold its value without any need to refresh it frequently. It is faster than DRAM; because it does not have to be refreshed with electric charge frequently. CPU does not have to wit to access data from SRAM. The SRAM chips utilize less power. The SRAM chip is more expensive than the DRAM chip.
In most modern computer SRAM technology is used to build very fast memory. This memory is known as the cache memory.
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