gcr

3 definitions found

gcr - Free On-line Dictionary of Computing (26 May 2007) :

  Group Code Recording
  GCR
  
     <storage> (GCR) A recording method used for 6250 BPI magnetic tapes
     .
  
     GCR typically uses a group of five bits of code to represent
     four bits of data.  The encoding ensures no more than two or
     three zeros occur in a row, and no more than eight or so ones
     occur in a row, where zeros represent an absense of magnetic
     change.
  
     GCR is also used on Commodore Business Machines diskette
     drives; the 4040, 8050, 154x, 157x and 158x series of 5.25"
     and 3.5" low and high density diskette drives used with 8-bit
     home computers circa 1977 to 1992.  It was also supported on
     Amiga internal and external drives but only used for reading
     non-Amiga disks.
  
     Compare NRZI, PE.
  
     (2004-06-01)
  

gcr - V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006) :

  GCR
         Gray Component Replacement (RGB, CYMK, DTP)
         

  GCR
         Group Coded Recording