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Computing (FOLDOC) dictionary
longitudinal parity
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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.