- a) The number obtained by subtracting a given n-digit binary number from (which yields the same result as the logical complement).
The ones complement of 0xAAAA is 0x5555 on a 16-bit machine, and 0xFFFF5555 on a 32-bit machine.b) The convention by which bit patterns with high bit 0 represent positive numbers from 0 to directly, while bit patterns with high bit 1 represent negative numbers from 0 to , n being the word size of the machine, and the numeric complement of a number is its ones complement.
Computers that use ones complement arithmetic have two representations for zero, all 0s and all 1s.
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Ones' complement — The ones complement of a binary number is defined as the value obtained by inverting all the bits in the binary representation of the number (swapping 0 s for 1 s and vice versa). The ones complement of the number then behaves like the negative… … Wikipedia
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logical complement — noun The number, obtained by complementing every bit of a given number, which produces all ones when exclusive ored with the given number. The logical complement of 0xAAAA is 0x5555 on a 16 bit machine, and 0xFFFF5555 on a 32 bit machine. Syn:… … Wiktionary
two's complement — noun a) The number obtained by complementing every bit of a given number and adding one. A number and its complement add to 2, where n is the word size of the machine. The twos complement of 0xAAAA is 0x5556 on a 16 bit machine, and 0xFFFF5556 on … Wiktionary
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two's complement — noun Date: 1958 the negative of a binary number represented by switching all ones to zeros and all zeros to ones and then adding one to the result … New Collegiate Dictionary
Method of complements — Complement numbers on an adding machine c. 1910 In mathematics and computing, the method of complements is a technique used to subtract one number from another using only addition of positive numbers. This method was commonly used in mechanical… … Wikipedia