longitudinal parity

<storage, communications>

An extra byte (or word) appended to a block of data in order to reveal corruption of the data. Bit n of this byte indicates whether there was an even or odd number of "1" bits in bit position n of the bytes in the block. The parity byte is computed by XORing the data bytes in the block. Longitudinal parity allows single bit errors to be detected.

Last updated: 1996-03-01

Nearby terms:

LolliLOMlongitudinal parityLongitudinal Redundancy CheckLOOK

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