目 录
一、设计任务和性能指标..........................................................................................2
1.1 设计任务 ............................................................................................................2
1.2 性能指标 ............................................................................................................2
二.设计方案.................................................................................................................2
三.系统硬件设计.........................................................................................................3
3.1 单片机最小系统 ...............................................................................................3
3.2 键盘接口电路 ...................................................................................................3
3.3 数码管显示电路 ...............................................................................................4
3.4 错误报警电路 ...................................................................................................5
四、系统软件设计......................................................................................................6
4.1 键盘扫描子程序设计 .......................................................................................6
4.2 移位子程序及结果计算子程序设计 .............................................................10
4.3 显示子程序设计 .............................................................................................12
4.4 主程序设计 .....................................................................................................13
五、调试及性能分析................................................................................................13
5.1 调试步骤 .........................................................................................................13
5.2 性能分析 .........................................................................................................14
六、心得体会............................................................................................................14
参考文献....................................................................................................................14
附录 1 系统硬件电路图...........................................................................................15
附录 2 程序清单.....................................................................................................16
