check bit

Noun
  1. (computer science) a bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's;
    E.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error (synset 113646953)
    referred to in: computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
    is a type of: bit - a unit of measurement of information (from binary + digit); the amount of information in a system having two equiprobable states
    same as: parity, parity bit

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