Q200B实验开发板实用的程序，已经在原有基础上测试改进，现在实现两路AD转化，并且在数码管交替显示转化数值，同时串口中断方式实现简单响应回传数据给上位机。-Q200B experimental procedures and practical development board has been tested on the original basis to improve, and now the realization of two AD conversion, and in turn s