资料来源 : Free On-Line Dictionary of Computing

Micro Channel Architecture
     
         (MCA) {IBM}'s proprietary 32-bit {bus}, used in
        high-end {PS/2} {personal computers}.  Micro Channel is
        designed for {multiprocessing}.  It eliminates potential
        conflicts that arise when installing new peripheral devices.
        MCA is *not* compatible with either {EISA} or {XT bus
        architecture} so older cards cannot be used with it.
     
        As with the {ROM} {BIOS} in the first {IBM PCs}, figuring out
        the Micro Channel's secrets has been an arduous task of
        {reverse engineering} ever since the PS/2 line was announced.
        Consequently, the MCA has never become as wide spread as the
        competing {EISA} standard.
     
        (1996-08-16)