A.OCH,23FFH:00F0H B.OBH,F(xiàn)000H:FF23H C.OBH,00F0H:23FFH D.OCH,F(xiàn)000H:FF23H
A.輸入信號(hào) B.輸出信號(hào) C.全部信號(hào) D.中斷信號(hào)