目 录
第 1 章 引言 ...................................................................................................................1
1.1 研究背景及意义 ........................................................................................................1
1.2 国内外研究现状以及本系统的重点问题 ................................................................1
1.3 本文章节安排 ............................................................................................................2
第 2 章 系统设计方案论证 ...........................................................................................3
2.1 控制器模块方案论证 ................................................................................................3
2.2 键盘模块方案 ............................................................................................................4
2.3 电源模块方案 ............................................................................................................4
第 3 章 系统硬件设计方案 ...........................................................................................5
3.1 系统设计框图 ............................................................................................................5
3.2 硬件电路设计 ............................................................................................................5
3.2.1 电源电路 .................................................................................................................5
3.2.2 单片机 89C52 最小系统 ........................................................................................6
3.2.3 按键电路 ...............................................................................................................13
3.3.4 LED 灯电路 ...........................................................................................................13
第 4 章 程序设计及软件仿真 .....................................................................................15
4.1 软件设计框图 ..........................................................................................................15
4.2 软件开发平台选择 ..................................................................................................15
4.3 软件系统功能模块 ..................................................................................................16
4.3.1 初始化模块 ...........................................................................................................16
4.3.2 延时函数 ...............................................................................................................17
4.3.3 定时器控制模块 ...................................................................................................17
4.3.4 键盘扫描模式 .......................................................................................................17
4.3.5 LED 灯输出控制模块 ...........................................................................................18
4.4 程序调试仿真 ..........................................................................................................19
4.4.1 仿真平台介绍 .......................................................................................................19
4.4.2 仿真测试 ...............................................................................................................19
第 5 章 硬件调试 .........................................................................................................21
