采用n位补码（包含一个符号位）表示数据，可以直接表示数值（ ）。
- A.2n
- B.-2n
- C.2n-1
- D.-2n-1
正确答案及解析
正确答案
解析
在计算机中，n位补码（表示数据位），表示范围是-2n-1~+2n-1-1，其中最小值为人为定义，以n=8为例，其中-128的补码是人为定义的10000000。
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