这是通过IO口模拟进行读写IIC 存储器的程序，说明详细，在24c02上调试通过，51单片机ARM都可以 注意时钟频率就可以了-This is a program to read and write IIC memory via analog IO, detailed instructions, 24c02 on debugging through 51 single-chip ARM can pay attention to the clock frequency can