目录Ⅰ
目录 ....................................................................................................................................................Ⅰ
1 绪论................................................................................................................................................1
1.1 引言.................................................................................................................................1
1.2 电子密码锁背景 .............................................................................................................1
1.3 电子锁设计意义本设计特点..............................................................................................2
2 系统设计........................................................................................................................................4
2.1 系统总设计构造图 ..........................................................................................................4
2.2．开锁机构设计 ...............................................................................................................4
2.3 主控芯片 AT89C51 单片机简介 ......................................................................................5
3 系统硬件设计 ................................................................................................................................8
3.1 键盘设计 ..........................................................................................................................8
3.2 系统电路设计： ............................................................................................................10
3.2.1 晶振时钟电路 ...........................................................................................................10
3.2.2 复位电路设计 ............................................................................................................10
3.2.3 串口引脚功能简介 ....................................................................................................10
3.2.4 其他引脚 ...................................................................................................................10
3.2.5 显示电路设计 ...........................................................................................................13
3.3 电路图绘制 ....................................................................................................................14
3.4 元器件采购 ....................................................................................................................14
