Vertical Redundancy Check definition storage, communications
(VRC) An error checking method performed on one 8-bit ASCII
character, where the 8th bit is used as the parity bit
The resulting parity bit is constructed by XOR
ing the word
. The result is a "1" if there is an odd number of 1s, and a "0" if there is an even number of 1s in the word. This method is unreliable because if an odd number of bits
are distorted, the check will not detect the error. The Longitudinal Redundancy Check
is an improvement.