STC系列51单片机的模拟IIC驱动程序，很多此类的模拟IIC源码可能有个共同问题，即：当IIC芯片损坏后，单片机就会跑进程序的死循环，导致假性死机，此源码避免了这点。-STC series of 51 Single-chip simulation IIC drivers, many of these simulation IIC source may have a common problem, namely: When the IIC-chip is damaged, the microcontroller program will be ran into infinite loop, leading to pseudo-crash This source code to avoid this.