程序主要实现了两种功能，一个是模拟串口程序，因为STC单片机不自带串口，另一个功能就是IIc的驱动，各自一个H文件，很容易引用-Program achieved a major two functions, one is to simulate serial process, because STC microcontroller serial port does not own, and the other function is to IIc driver, each an H file,