The act or process of testing whether a byte or other data structure has an even or odd number of bits set to the value of 1; -- it is used primarily to detect errors in data, especially in memory banks or in data transmitted over a communications line. The parity can be changed by assigning one bit in each data structure as the parity bit, so that the total number of bits set to the value of 1 is odd (odd parity) or even (even parity). If parity is used for error checking the writing and reading systems must first agree on which type of parity (odd or even) to use; if the reading system detects a deviation from the agreed parity, it signals an error, to be handled by the error-handling processes of the system.

an error-checking scheme that examines the number of transmitted bits in a block that hold the value one; for even parity, an overhead parity bit is set to either one or zero to make the total number

Addition of noninformation bits to data, making the number of ones in each grouping either always odd for odd parity or always even for even parity. This permits single error detection in each group. See also: error and error control.

In many barcode except EAN, black bar module must be odd or even by adding a parity bit. Parity check is, to prevent misreading by checking its odd/even at each character.

(ISO) A redundancy check by which a recalculated parity bit is compared to the predetermined parity bit. Contrast with check summation, cyclic redundancy check [CRC].

A process for detecting data bits that changed during transmission.

a system of checking for errors in computer functioning

A test to help determine data's validity. Specifically, this test determines whether the number of zeros and ones that the binary digits of a byte of data represent is odd or even. (7/96)

Process for checking the integrity of a character. A parity check involves appending a bit that makes the total number of binary 1 digits in a character or word (excluding the parity bit) either odd (for odd parity) or even (for even parity).

The addition of noninformation bits that make up a transmission block to ensure tat the total number of 1's is always even or odd.

A procedure in which the addition of noninformation bits are added to data to make the number of ones in a grouping of bits either always even or always odd. This procedure allows detection of bit groupings that contain single errors. It can be applied to characters, blocks, or any specific bit grouping. Also called VRC.

An error checking procedure in which the number of 1s must always be the same (either odd or even) for each group of bits transmitted without error. In many barcode except EAN, black bar module must be odd or even by adding a parity bit.