说明：  学习DEA开发软件和QuartusII的使用方法，熟悉可编程逻辑器件的使用。通过制作来了解交通灯控制系统，交通灯控制系统主要是实现城市十字交叉路口红绿灯的控制
(DEA study the development of software and the use of QuartusII familiar with the use of programmable logic devices. To understand through the production control system for traffic lights, traffic light control system is mainly urban cross intersection traffic light control)