Which of the following is used in main memory? a) SRAM b) DRAM c) PRAM d) DDR

Which of the following is used in main memory? a) SRAM b) DRAM c) PRAM d) DDR
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Answer: b Explanation: DRAM stands for dynamic random access memory. It is denser than SDRAM (Static) and therefore it is used in the main memory. They are in the form of semiconductor RAMs
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