单片机作为核心控制，通过I2C接口读SHT11，读写DS1307，键盘连接，并可以把时间，温湿度数据在LCD显示屏上显示-SCM as a core control, through the I2C interface to read SHT11, read and write DS1307, the keyboard connection, and can be time, temperature and humidity data is displayed on LCD screen