RC531是重要的ISO14443应用协议芯片，RC531程序在底层协议程序上都有详细的描写。-RC531 is ISO14443 important application protocol chip, RC531 procedures in the underlying protocol has a detailed descr iption of the procedure.

通过串口发送指令发出RC5，NEC协议的红外信号(ending an instruction from a serial port to send out the infrared signal of the RC5, NEC protocol)