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基于单片机的交通灯的的设计
北 方 民 族 大 学
课程设计报告
院（部、中心） 电气信息工程学院
姓 名 学 号
专 业 测控技术与仪器 班 级 测控技术与仪器101
同组人员
课程名称
设计题目名称
起止时间 2012.12.27---2013.1.1
成 绩
指导教师签名
北方民族大学教务处制
教师评语：
报告成绩（30%） 平时成绩（50%） 答辩成绩（20%） 总评成绩
目录
一：设计方案及思路
(1)设计方案····················································4
(2)设计思路····················································4
二：硬件设计···················································5
系统构成·····················································5
七段数码管···················································5
发光二极管···················································5
（4）晶振作用······················································6
（5）手动按钮复位··················································6
（6）控制端口······················································6
(7) 74HC573驱动端口··············································7
三：软件设计··················································7
（1）流程设计······················································7
(2) Protel 99 SE图·················································8
（3）PCB图·······················································9
（4）Proteus 7 Professional仿真图·······································9
（5）程序设计·····················································10
四：实物······················································17
（1）实物图···················································17
（2）电源实物图···············································17
五：元器件清单··············································18
六：设计感想·················································18
七：参考文献·················································19
设计方案及思路
（1）设计方案
设计本系统能够实现带倒计时的A、B两个方向车辆绿灯通行、红灯停止的基本功能，并具备紧急中断功能。
1）起始状态为A方向红灯，倒计时显示为15，B方向为绿灯，倒计时显示为12。
2）按下开关K1：电路正常运行
3）按下开关K2：紧急中断，A、B方向倒计时停。
4）按下开关K3：紧急情况，黄灯全亮。
5）按下开关K4：解除中断，再次按下开关K1，系统恢复中断前状态。
（2）设计思路
设计出来的作品是根据实际需要来执行其相应功能
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