目 录
1 绪论 .........................................................1
1.1 课题背景 ..............................................................1
1.2 课题研究的目的和意义 ..................................................1
1.3 本设计的内容及意义 ....................................................1
1.3.1 本设计内容 ..........................................................1
1.3.2 本设计的意义 ........................................................1
2 8*8LED 点阵系统 ..............................................2
2.1 系统设计任务与设计要求 ................................................2
2.1.1 系统设计任务 ........................................................2
2.1.2 系统设计要求 ........................................................2
2.2 系统方案论证 ..........................................................2
2.2.1 控制器方案论 ........................................................2
3 8*8LED 点阵硬件部分 ...........................................3
3.1.1 STC89C52 的介绍......................................................4
3.1.2 74LS245 的介绍.......................................................6
3.1.3 晶振电路 ............................................................6
3.1.4 复位电路 ............................................................7
3.1.5 LED 点阵.............................................................8
3.1.6 8*8LED 点阵防电梯显示原理图..........................................8
4 8*8LED 点阵屏软件部分 ........................................9
4.1 软件设计 ..............................................................9
4.2 主程序模块 ...........................................................10
4.3 判断子程序 ...........................................................10
5 系统测试 ...................................................11
5.1 仿真测试..............................................................11
5.2 实际测试结果 .........................................................12
5.3 测试结果分析..........................................................12
5.4 硬件的测试 ...........................................................12
6 结论 ........................................................13
参考文献 ......................................................13
附录一 ........................................................14
附录二 ........................................................16
附录三 ........................................................19
