目录第1章引言.......................................................................................................................................41.1设计概述...................................................................................................................................41.2电子密码锁的简介...................................................................................................................51.3电子密码锁的发展趋势...........................................................................................................51.4设计目标与意义.......................................................................................................................51.5章节安排....................................................................................................................................5第2章方案论证与选型.....................................................................................................................72.1设计任务分析...........................................................................................................................72.2方案论证与选择.......................................................................................................................72.3方案确定...................................................................................................................................7第三章硬件电路的设计.......................................................................................................................83.1原理分析...................................................................................................................................83.2指示灯显示部分.......................................................................................................................83.3报警部分...................................................................................................................................83.4系统原理电路总体框图.......................................................................................................