Parity - Definition
Parity is a method of error checking memory in which a ninth bit is added. A computer may use Even Parity or Odd Parity. Using Even Parity, when data is put into memory, each byte is examined to determine the number of 1s. If the number of 1s in the byte are even, then a Zero (0) would be put in the ninth bit. If the number of 1s in the byte are odd, then a One (1) would be put in the ninth bit to make the number even. So every byte in memory should have an even number of 1s. If a byte is found to have an odd number, then a parity error is displayed. The opposite is true for Odd Parity.
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