[1] : The Free On-line Dictionary of Computing (27 SEP 03)

group code recording
     
         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, where 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.  also used on amiga
        internal and external drives.
     
        compare nrzi, pe.
     
        1997-08-29
     
     
see also:
magnetic tapes commodore business machines diskette amiga nrzi pe 

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Code Grinder, definition of term: Code Grinder
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Blood Group, definition of term: Blood Group
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Carboxyl Group >> C Words
Carboxyl Group, definition of term: Carboxyl Group
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Dead Code >> D Words
Dead Code, definition of term: Dead Code
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Abelian Group >> A Words
Abelian Group, definition of term: Abelian Group
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Country Code >> C Words
Country Code, definition of term: Country Code
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Binary Code >> B Words
Binary Code, definition of term: Binary Code
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Amido Group >> A Words
Amido Group, definition of term: Amido Group
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Animal Group >> A Words
Animal Group, definition of term: Animal Group
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