目 录
1 绪论 .................................................................................3
2 系统设计要求及功能 ...................................................................4
2.1 设计要求 .......................................................................4
2.2 系统主要功能 ...................................................................4
3 系统方案选择与论证 ...................................................................5
3.1 总体方案设计 ...................................................................5
3.1.1 总体方案选择与论证 .......................................................5
3.1.2 总体设计框图 .............................................................5
3.2 部分芯片选择与论证 .............................................................5
3.2.1 单片机选择与论证 .........................................................5
3.2.2 显示部分方案选择与论证 ...................................................6
4 硬件电路设计 .........................................................................7
4.1 系统芯片概述 ...................................................................7
4.1.1 单片机概述 ...............................................................7
4.1.2 数码管概述 ...............................................................8
4.1.3 74LS373 芯片概述 .........................................................10
4.1.4 74HC245 概述 .............................................................10
4.2 系统电路设计 ..................................................................12
4.2.1 主控电路设计 ............................................................12
4.2.2 驱动电路设计 ............................................................12
4.2.3 显示部分电路设计 ........................................................13
5 软件设计 ............................................................................14
6 系统调试及结果分析 ..................................................................15
6.1 系统调试 ......................................................................15
6.2 性能分析 ......................................................................15
总结 ..................................................................................16
参考文献 ..............................................................................17
致 谢 ..............................................................................18
附件 ..................................................................................19
