基于Proteus和Keil C 的交通灯控制，是学习MCS51（8951）单片机和液晶的优秀程序
程序功能：模拟交通灯控制系统
　　　　　 灯：南北方向：红3黄2绿3
　　　　　　　 东西方向：绿3黄2红3
　　　　　　　 黄色闪烁2次
　　　　　 键：紧急键，东西一个，南北一个，按下去后保持红色，直到松开键
要　　求：定时要采用定时系统实现,Proteus, and Keil C based on the traffic light control, is to learn MCS51 (8951) microcontroller and LCD program features outstanding programs: Analog Traffic Light Control System Light: north-south direction: Red 3 Yellow 2 Green 3 east-west direction: Green 3 Yellow 2 Red 3 Yellow flash 2 times button: emergency key, something a North-South one, press down maintained after the red, until the release key requirements: timing system to be adopted from time to time to achieve