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RAM is the abbreviation of read-only memory, and RAM is random access memory. Flash Memory combines the advantages of ROM and RAM. RAM is used to store data and programs that are currently in use (that is in execution) DRAM (DRAM) is the most used memory in a computer today, and it has a cost advantage, which in fact defeats another Intel memory~ Rambus DRAM. DRAM is divided into many kinds, the most common ones are FPRAM / FastPage, EDORAM, SDRAM, RAM, SGRAM, WRAM and so on.