DRAM stands from Dynamic RAM (dynamic RAM) is a type of memory RAM.As well as SRAM but are cheaper because the use RAM, must be fire all the time.And besides, fire and DRAM also want to Refresh data periodically, a virtual Memorial, which are SRAM that do not require. Refresh due to use of the principle of the capacitor to store information. When time passes, the charge will gradually leak water out, need to be Refresh charge all the time use.
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