单片机控制交通灯,本系统采用MSC-51系列单片机ATSC51和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器，实现了能根据实际车流量通过8051芯片的P1口设置红、绿灯燃亮时间的功能-SCM control traffic lights, the system uses MSC-51 Series MCU ATSC51 and programmable parallel I/O interface chip 8255A-centered design of traffic light controller device to realize the actual traffic flow according to the P1 port by 8051 set of red, Green kindle function of time