华北科技学院毕业设计（论文）目录设计总说明································································IIntroduction······························································I第一章绪论...............................................................11.1设计背景..........................................................11.2电子密码控制简介..................................................11.3电子密码控制的发展趋势............................................21.4本设计所要实现目标的简述..........................................2第二章控制方案的设计、选择...............................................32.1采用数字电路控制..................................................32.2采用以单片机为核心的控制方案......................................4第三章主要元器件介绍及I2C总线与串行通信说明..............................53.1主控芯片AT89C51...................................................53.1.1AT89C51性能简介.............................................53.1.2AT89C51引脚功能简介.........................................53.2LCD1602显示器.....................................................83.2.1LCD结构及引脚功能...........................................83.2.2LCD显示指令系统.............................................93.3晶体振荡器........................................................93.4I2C总线说明及M24C01串行EEPROM..................................103.4.1I2C总线的硬件结构..........................................103.4.2I2C总线工作原理：..........................................113.4.3存储器24C01................................................133.5串口通信.........................................................14第四章系统硬件构成......................................................164.1设计原理.........................................................164.2键盘输入部分.....................................................174.2.1矩阵式键盘的结构与工作原理.................................184.3复位部分.........................................................194.4晶振部分.........................................................204.5显示部分.........................................................204.6开锁部分和报警部分...............................................21华北科技学院毕业设计（论文）第五章系统软件构成......................................................225.1系统软件流程图的设计.............................................225.1.1主程序流程图...............................................225.1.2按键功能流程图.............................................245.1.3设置密码流程图.............................................245.1.4开锁流程图.................................................255.2Proteus和keil开发软件的功能介绍.................................285.2.1Proteus的简介..............................................285.2.2Proteus的实用功能..........................................295.2.3Keil的简介.................................................315.2.4Keil软件的使用方法.........................................325.2.5系统的仿真运行.............................................33第六章结论..............................................................36参考文献.................................................................37致谢.........................
