LPC1752串口的应用，三个串口的例子都有，查询和终端的方法-LPC1752 serial applications, three examples are the serial port, queries, and method of terminal

USART： 串口打字机（将接收到的数据原样输出） PCF8563定时，利用串口将时间传至PC 24C01读写，利用串口将结果传至PC DS18B20检测温度，利用串口将结果传至PC-USART: Serial typewriter (the received data is output) PCF8563 timing, use of the time spread PC 24C01 serial read and write, using the result