§3.4 驱动模块 ............................................................................20
§3.4.1 点亮 LED 灯 ................................................................20
§3.4.2 开闭蜂鸣器 ..................................................................22
§3.4.3 KEYBOARD 按键驱动 .................................................24
第 4 章 软件设计 ...........................................................................26
§4.1 软件设计总流程图 .............................................................26
§4.2 A/D 转换模块 ......................................................................28
§4.2.1 A/D 转换流程图 ...........................................................27
§4.2.2 A/D 接口设计 ...............................................................28
§4.3 显示模块 ............................................................................29
§4.3.1 显示模块流程图 ..........................................................29
§4.3.2 显示模块接口设计 ......................................................30
§4.4 键盘输入模块.....................................................................34
§4.4.1 键盘输入流程图 ..........................................................34
§4.4.2 键盘输入接口 ..............................................................34
§4.5 报警模块 ............................................................................35
§4.6 LED 灯闪亮模块 .................................................................35
§4.7 字符取模模块.....................................................................36
第 5 章 电压表的调试及性能分析 .................................................39
§5.1 软件调试 ............................................................................39
§5.2 显示测试结果图 .................................................................39
§5.2.1 正常状态下 ..................................................................39
§5.2.2 超压状态下 ..................................................................40
§5.3 误差分析及解决方案 .........................................................41
§5.3.1 误差分析......................................................................41
§5.3.2 解决方案......................................................................41
结 论 ............................................................................................42
参考文献.........................................................................................43
致 谢 ............................................................................................45
