【单选题】下面是有关DRAM和SRAM存储器芯片的叙述: ① SRAM比DRAM存储电路简单 ② SRAM比DRAM成本高 ③ SRAM比DRAM速度快 ④ SRAM需要刷新,DRAM不需要刷新
【多选题】下列关于SRAM的叙述,正确的是
B.
SRAM是一种易失性存储器,断电则丢失存储信息
C.
SRAM需要刷新操作,不定时刷新,数据会丢失
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