8ä½åé¿è¡¥ç èå´ï¼1000 0000bï½0111 1111b
对åºççå¼èå´:-1000 0000bï½+111 1111b, å³ -128dï½ +127d
.
-128dç解éï¼
8ä½åé¿æ¨¡ =2^8 =1 0000 0000b
å½[x]è¡¥ =1000 0000b,
x =[x]补 -模 =1000 0000b -1 0000 0000b = -1000 0000b = -128d
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