说明：  用89S52做的NEC码的红外发射程序，其中p10-p17口接按钮组成标准4*4键盘，发射后对应的按键解码为0-F
(89S52 to do with the NEC Code of infrared emission process, in which p10-p17 button I received the composition of the standard 4* 4 keyboard, fired after the decoding keys corresponding to 0-F)