软件思路：选择RAO做为模拟输入通道 连续转换4次再求平均值做为转换结果最后结构只取低8位结果送数码管的低3位显示

硬件要求：拨码开关S14第2位置ON，第1位置OFF拨码开关S6全部置ON，S5第4-6位置ON，第1-3位置OFF为不影响结果，其他拨码开关置OFF。-Software idea: Select analog input channel as RAO　consecutive conversions on average 4 times longer for the results of the final structure for the conversion, only to send the results of a low 8-bit digital tube 3 shows the low hardware requirements: S14 DIP switch No. 2 position ON 1 position DIP switch OFF all S6 home ON, S5 section 4-6 position ON, the first 1-3 for the OFF position does not affect the results, and other home DIP switch OFF.