目 录
摘 要 ...................................................................................................................................I
ABSTRACT ...........................................................................................................................II
第一章 前言 .......................................................................................................................1
第二章 方案论证与比较 ...................................................................................................2
2.1 数字时钟方案............................................................................................................2
2.2 数码管显示方案........................................................................................................2
第三章 系统设计 ...............................................................................................................3
3.1 总体设计....................................................................................................................3
3.1.1 系统说明..........................................................................................................3
3.1.2 系统框图..........................................................................................................3
3.2 模块设计....................................................................................................................3
3.2.1 复位电路..........................................................................................................3
3.2.2 按键调时间部分..............................................................................................4
3.2.3 温度采集部分..................................................................................................4
3.2.4 数码管位选部分..............................................................................................5
3.2.5 数码管段选部分..............................................................................................7
3.2.6 数码管显示部分..............................................................................................8
3.2.7 单片机控制部分..............................................................................................9
第四章 原理图与 PCB 图 .................................................................................................11
4.1 原理图.........................................................................................................................................11
4.2 PCB
图.........................................................................................................................................12
第五章 软件设计 .............................................................................................................13
5.1 程序流程图..............................................................................................................13
5.2 源程序......................................................................................................................16
第六章 总结 .....................................................................................................................24
6.1 物品清单与元件特性..............................................................................................24
6.2 设计总结..................................................................................................................25
参考文献（REFERENCES）：........................................................................................26
