目录 摘要 ....................................................................................................................................................................... I Abstract .............................................................................................................................................................. II 1. 整体设计原理分析 .......................................................................................................................................... 1 1.1 设计目的 ................................................................................................................................................ 1 1.2 设计思路 ................................................................................................................................................ 1 2. 模块功能介绍及其型号选择 .......................................................................................................................... 2 2.1 数码管模块 ............................................................................................................................................ 2 2.2 串口通信模块 ...................................................................................................... 错误！ 未定义书签。 3. 电路设计 .......................................................................................................................................................... 2 3.1 单片机最小系统模块设计 .................................................................................................................... 2 3.2 矩阵键盘模块设计 ................................................................................................................................ 4 3.3 数码管显示模块设计 ............................................................................................................................ 4 4. Protel 原理图设计 ......................................................................................................................................... 5 4.1 新建原理图文件 .................................................................................................................................... 5 4.2 设置画图环境 ........................................................................................................................................ 5 4.3 设置元件库 ............................................................................................................................................ 6 4.4 画图步骤 ................................................................................................................................................ 7 5. 印制版图的设计 .............................................................................................................................................. 8 5.1 准备电路原理图与网络表 .................................................................................................................... 8 5.2 创建 PCB 文件 ...................................................................................................................................... 8 5.3 规划电路板 ............................................................................................................................................ 8 5.4 网络表与元件的装入 ......................................................................................................................... 10 5.5 PCB 布板布局 ..................................................................................................................................... 10 5.6 手工布局 ...............................................................................................................................................11 5.7 电路整体效果图 .................................................................................................................................. 13 6. Mul ti si m & AD 电路仿真 ............................................................................................................................. 14 6.1 放置电源及信号源 .............................................................................................................................. 14 6.2 放置网络标号 ...................................................................................................................................... 15 6.3 设置仿真参数 ...................................................................................................................................... 15 6.4 查看仿真波形 ...................................................................................................................................... 15 6.5 仿真结果 .............................................................................................................................................. 15 8. 结束语 ............................................................................................................................................................ 18 参考文献 ............................................................................................................................................................ 19 附录一 完整原理图及 PCB ............................................................................................................................... 20
