one's-complement arithmetic 表示什么意思？

Question

出自 APUE 2
section 2.5.1

"All the limits defined by ISO C are compile-time limits. Figure 2.6 shows the limits from the C standard that are defined in the file <limits.h>. These constants are always defined in the header and don't change in a given system. The third column shows the minimum acceptable values from the ISO C standard. This allows for a system with 16-bit integers using one's-complement arithmetic. The fourth column shows the values from a Linux system with 32-bit integers using two's-complement arithmetic. Note that none of the unsigned data types has a minimum value, as this value must be 0 for an unsigned data type. On a 64-bit system, the values for long integer maximums match the maximum values for long long integers.

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Answer 1

某个数关于1的补码 就是这个数的二进制表示按位取反 关于2的补码是 这个数二进制表示按位取反，最后在+1

Answer 2

似乎可以解释成反码和补码，基本知识换了个名词呵呵