目录第一章绪论..............................................................................................................................................21.1课题的背景和意义............................................................................................................................21.2国内外现况........................................................................................................................................31.3本课题主要研究内容........................................................................................................................41.最小的单芯片系统的硬件设计;..........................................................................................................42.液晶屏的硬件设计;..............................................................................................................................43.警告声光报警电路;..............................................................................................................................44.硬件功能测试程序。............................................................................................................................41.4开发环境介绍....................................................................................................................................41)开发环境..............................................................................................................................................42)运行环境..............................................................................................................................................5第二章硬件介绍....................................................................................................................................62.1STC89C52概述...................................................................................................................................6图2-151单片机管脚图..........................................................................................................................61主电源引脚............................................................................................................................................72时钟源....................................................................................................................................................73控制,选通或复用...................................................................................................................................74多功能I/O端口.....................................................................................................................................72.2keilC51的开发环境..........................................................................................................................82.2Nokia/诺基亚5110LCD...................................................................................................................9图2-2Nokia5110显示屏......................................................................................................................102.3GP2Y0A02YK0F红外激光测距模块.................................................................................................101、距离测量范围：20to150cm................................................................................................
