Definition of parity bit in US English:

parity bit


  • A bit which acts as a check on a set of binary values, calculated in such a way that the number of 1s in the set plus the parity bit should always be even (or occasionally, should always be odd).

    • ‘Integrity can be ensured through such software tools as checksums, parity bits, and cyclical redundancy codes.’
    • ‘A modern alternative to parity bits is ECC, short for Error Correction Code.’
    • ‘To overcome this limitation, the driver simulates it by using the parity bit.’
    • ‘The logic circuit is described by a parity-check matrix for this code comprising 128 data bits, 16 check bits, and 2 address parity bits.’
    • ‘The simplest device is a ‘parity bit,’ an extra bit that keeps track of whether the number of 1s in a binary number is odd or even.’