#CPU_board__mother_board  the main circuit board for a computer
  supertype:  #circuit_board__circuitboard__circuit_card__circuitcard__board__card  a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities
  part of:  #CPU__central_processing_unit__C.P.U.__central_processor__centralprocessor__processor__mainframe  (computer science) the part of a computer (a microprocessor chip) that does most of the data processing; the CPU and the memory form the central part of a computer to which the peripherals are attached
     part of:  #electronic_computer__computer__computing_machine__computingmachine__computing_device__computingdevice__data_processor__information_processing_system  a machine for performing calculations automatically
        part of:  #platform.computer_system  the combination of a particular computer and a particular operating system

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