采用的主控芯片LPC1768系列CORTEX-M3内核处理器，时钟晶振XT=12MHZ，系统时钟96MHZ，外部时钟PLCK 本程序采用查询方式完成串口的接收和发送程序

　　 -Using master chip LPC1768 series CORTEX-M3 core processor, clock oscillator XT = 12MHZ, the system clock 96MHZ, the program uses an external clock PLCK query complete serial receive and transmit program