Source : Free On-Line Dictionary of Computing

GNU DC
     
        GNU Desktop Calculator.
     
        An {interpreter} for a subset of the standard {Unix} {DC} that
        handles all its operations, except the (undocumented) {array}
        operations.  Integration with GNU BC is being attempted.
     
        Version 0.2.
     
        {FTP} dc-0.2.tar.Z from your nearest {GNU archive site}.
     
        (1993-05-21)