通过用80C51芯片写入程序，实现十字路口交通灯通行功能，模拟路口处得红绿灯状态转换，达到保持车辆顺畅通行无阻，禁止路口处车辆阻塞，疏导交通的目的。-Written procedure by using 80C51 chip, to achieve common feature crossroads traffic lights, traffic lights simulated intersection was the state transition, to maintain the smooth and unimpeded access of vehicles to prohibit the intersection blocking traffic, divert traffic purposes.