说明：  [代码]红外线发射与接收源程序[代码]红外线发射与接收源程序[代码]红外线发射与接收源程序[代码]红外线发射与接收源程序
([Code] source infrared transmitter and receiver[Code] source infrared transmitter and receiver[Code] source infrared transmitter and receiver[Code] source infrared transmitter and receiver)