本电路设计的计价器不但能实现基本的计价，而且还能根据白天、黑夜、中途等待来调节单价，同时在不计价的时候还能作为时钟为司机同志提供方便。-The circuit design of the meter will not only realize the basic valuation, but also according to the daytime, night, halfway to wait to adjust the unit