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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.

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Lojban LOL LOLITA Lolli LOM	longitudinal parity Longitudinal Redundancy Check parity	Longitudinal Redundancy Check LOOK Look Ahead Left-to-right parse, Rightmost-derivati Look ahead LR look and feel