采用51单片机，对pcf8591采样数据进行AD转化，并使用I2C协议进行数据传输，波特率设置为96-AD transfer by using PCF 8591

海尔HR7P196FLL单片机AD采样程序。如果AD电路的输入电压被引脚拉高，则在AD电路与引脚之间加一个电压跟随器-Haier HR7P196FLL SCM AD sampling program. If the input voltage AD circuit is pin high, at between AD circuit and applying a voltage follower pin