目 录
引言 ...........................................................1
1 设计任务及要求 ..............................................2
1.1 设计任务 ..............................................................2
1.2 设计要求 ..............................................................2
1.3 设计思路 ..............................................................2
1.4 方案选择与论证 ........................................................2
1.4.1 人机接口模块的选择 ..................................................2
1.4.2 拼音输入法方案 ......................................................3
1.4.3 12864 液晶...........................................................3
1.5 工作原理简介 ..........................................................3
1.6 系统原理框图 ..........................................................4
2 硬件设计 ....................................................4
2.1 4×4 按键..............................................................4
2.2 AT89C55WD 单片机.......................................................5
2.3 12864 液晶.............................................................6
3 软件设计 ....................................................8
3.1 按键扫描模块 ..........................................................9
3.2 LCD 显示模块.........................................................9
3.3 文字输入模块 .........................................................10
4 系统制作过程 ...............................................16
4.1 硬件制作和调试 .......................................................16
4.2 软件调试 .............................................................17
4.2.1 按键部分调试 .......................................................17
4.2.2 12864LCD 部分.......................................................17
4.2.3 中文全拼输入法调试 .................................................18
5 操作说明 .................................................19
5.1 输入汉字 .............................................................20
5.2 输入英文字母 .........................................................21
5.3 输入数字 .............................................................21
5.4 输入符号 .............................................................22
5.5 退格键 ...............................................................22
5.6 总效果图 .............................................................22
6 结论 .......................................................22
