本科论文目 录摘 要....................................................................................................................IAbstract.....................................................................................................................II引 言...................................................................................................................1第 1 章 系统整体方案设计.....................................................................................31.1 系统方案的选择...........................................................................................31.2 系统方案设计...............................................................................................31.2.1 系统概述..............................................................................................31.2.2 系统框图..............................................................................................4第 2 章 系统硬件设计.............................................................................................52.1 单片机 STC89C52........................................................................................52.1.1 最小系统电路......................................................................................62.2 显示电路.......................................................................................................72.2.1 显示方案的选择..................................................................................72.2.2 1602 液晶显示.....................................................................................72.2.3 液晶显示模块电路..............................................................................82.3 烟雾检测模块...............................................................................................82.3.1 烟雾传感器的选型..............................................................................82.3.2 烟雾检测模块电路........................................................
