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SRAMs:

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靜態(tài)隨機存取存儲器（Static Random-Access Memory，SRAM）是隨機存取存儲器的一種。所謂的“靜態(tài)”，是指這種存儲器只要保持通電，里面儲存的數(shù)據(jù)就可以恒常保持。相對之下，動態(tài)隨機存取存儲器（DRAM）里面所儲存的數(shù)據(jù)就需要周期性地更新。然而，當電力供應(yīng)停止時，SRAM儲存的數(shù)據(jù)還是會消失（被稱為volatile memory），這與在斷電后還能儲存資料的ROM或閃存是不同的。