# Dictionary:Complement

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{{#category_index:C|complement}}
(kam’ plē m∂nt) The difference between a particular value and full scale. In the decimal system, the complement of *x* is (10μ–*x*), where μ is a fixed number; and in binary the complement of *x* is (2μ–*x*). Adding the complement of *x* is equivalent to subtracting *x*, and computers often find it easier to generate the complement and add than to subtract. See also *one’s complement* and *two’s complement*.