内存按字节编址。若用存储容量为32K×8bit的存储器芯片构成地址从A0000H到DFFFFH的内存，则至少需要（ ）片芯片。
- A.4
- B.8
- C.16
- D.32
正确答案及解析
正确答案
解析
地址范围内的存储单元个数：DFFFFH–A0000H+1=40000H=4×164=218；
按字节编址则存储容量为218B；
所选芯片单位容量：32K×8bit=32KB=25×210B=215B；
需要芯片数量=总容量/单位容量=218B/215B=23=8片。
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