说明：  通过IIC总线协议实现TM1637数码管模块0-100循环计数功能，并设置从0开始 每加数20次，蜂鸣器响1s钟。
(The function of 0-100 cycle counting of TM1637 digital tube module is realized by IIC bus protocol, and the buzzer rings 1 s every 20 additions starting from 0.)