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116问答网 > 三十二位十六进制数FFFFFFFE转化为十进制符号数

三十二位十六进制数FFFFFFFE转化为十进制符号数

2025-03-16 04:21:34

推荐回答（1个）

回答1：

-2
（一）：补码（one's complement) 指的是正数=原码，负数=反码加一
（二）：反码（two's complement) 指的就是通常所指的反码。
FFFFFFFE
已知一个数的补码，求原码的操作其实就是对该补码再求补码：
⑴如果补码的符号位为“0”，表示是一个正数，其原码就是补码。
⑵如果补码的符号位为“1”，表示是一个负数，那么求给定的这个补码的补码就是要求的原码。

对FFFFFFFE 符号位不变，其余各位取反为
8000001
再加1 为 8000002
即-2

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