设计
目
录
摘 要......................................................................................................................................I
Abstract：........................................................................................................................................II
第 1 章 前 言...............................................................................................................................2
1.1
课题研究背景和意义
..............................................................................................................2
1.2
本课题的研究前景
.................................................................................................................2
1.3
本课设计任务
.........................................................................................................................3
1.4
课题章节安排说明
.......................................................................................................................3
第２章 方案设计与论证................................................................................................................4
2.1
系统总体设计方案
........................................................................................................................4
2.2
各模块方案选择与论证
...............................................................................................................4
2.2.1 控制器选择方案..................................................................................................................4
2.2.2 显示方案..............................................................................................................................4
2.3 设计用到的硬件器件及软件开发工具
......................................................................................5
2.3.1 单片机发展现状..................................................................................................................6
2.3.2 单片机的选用.......................................................................................................................7
2.4 设计软件的选用.......................................................................................................................7
第３章 硬件原理分析及设计 ........................................................................................................9
3.1 单片机硬件电路设计
...................................................................................................................9
3.1.1 电源电路设计......................................................................................................................9
3.1.2 AT89S52 引脚功能说明.....................................................................................................10
3.1.3 电源电路设计....................................................................................................................12
3.1.4 时钟电路设计....................................................................................................................13
3.1.5 复位电路设计....................................................................................................................14
3.2 数码管电路设计
........................................................................................................................14
第４章 软件设计 .........................................................................................................................16
4.1
数码管显示
.................................................................................................................................16
4.1.1 数码管显示原理................................................................................................................16
4.1.2 数码管显示分配................................................................................................................18
4.2
单片机定时器
/
计数器应用
........................................................................................................18
4.2.1 认识单片机定时器/计数器..............................................................................................18
4.2.2 设置单片机定时器/计数器..............................................................................................18
4.2.3 初始化定时器/计数器......................................................................................................19
4.3 时间的累积的计算
....................................................................................................................21
