vertical redundancy check

1 definition found

vertical redundancy check - Free On-line Dictionary of Computing (26 May 2007) :

  Vertical Redundancy Check
  VRC
  
     <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 XORing 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.
  
     (2001-04-28)