②学年论文正文格式 - 副本new

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1、目录1引言............................................................................................................................21.1课题背景..............................................................................................................21.2目的

2、及意义..........................................................................................................31.3主要完成的任务.................................................................................................42方案比较..............................

3、......................................................................................43硬件电路....................................................................................................................33.1系统电路设计...................................

4、...................................................................33.2AT89S52外加电源与重置电路..........................................................................43.3控制单元....................................................................................

5、.........................63.4空气检测单元.....................................................................................................63.4.1TGS2600模块说明.......................................................................................74元器件介绍......

6、..........................................................................................................84.1AT89S52简介......................................................................................................94.1.1芯片主要性能和引脚图................

7、...............................................................94.1.2AT89S52引脚使用简介................................................................................94.2AT89S52中断简介............................................................................

8、................115软件设计..................................................................................................................116系统仿真与测试..................................................................................