目 录1引言...........................................................................................................................21.1 目的和意义........................................................................................................21.2 讨论概况及进展趋势综述................................................................................31.3 本系统主要讨论内容........................................................................................42. 总体方案论证与设计..................................................................................................52.1 主控模块的选型和论证....................................................................................52.2 显示模块的选型和论证....................................................................................52.3 传感器的选型和论证........................................................................................52.4 时钟芯片的选型和论证....................................................................................62.5 系统整体设计概述............................................................................................63.系统硬件电路设计.......................................................................................................73.1 主控模块............................................................................................................73.1.1 STC89C52 单片机主要特性..................................................................73.1.2 STC89C52 单片机的中断系统............................................................103.1.3 单片机最小系统设计...........................................................................103.2 LCD 液晶显示器简介.....................................................................................103.2.1 液晶原理介绍.......................................................................................103.2.2 液晶模块简介.......................................................................
