模拟交通灯实验，实验报告

用 8255 做输出口，控制十二个发光管（4 组红绿黄灯）的亮灭，模拟十字路*通灯

管理。-Simulated traffic light experiments report

To do with the 8255 output, control twelve light tube (4 groups of red, green yellow) light off, analog crossroads traffic lights

Management.