红绿灯实时变换程序，在接到信号时对该路车流量进行统计，一个高电平代表一辆车。并能对两条路的流量进行比较计算，根据比较百分比输出相应数值电平。-Transformation process in real time the traffic lights, after receiving the signal for the road traffic statistics, a high level representative of a car. And is able to compare th