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目录第一章绪论...................................................................................................................11.1选题背景和意义..............................................................................................11.2系统概述..........................................................................................................2第二章硬件电路地设计...............................................................................................32.1ATmega16单片机...........................................................................................32.1.1ATmega16地主要特性................................................................................32.1.2ATmega16引脚介绍....................................................................................42.2DS18B20芯片.................................................................................................62.2.1DS18B20芯片地特性..................................................................................62.2.2DS18B20引脚排列......................................................................................72.2.3DS18B20地内部结构..................................................................................72.2.4DS18B20芯片各部分介绍..........................................................................82.3单线总线系统................................................................................................112.3.1处理顺序.....................................................................................................112.3.2初始化.........................................................................................................122.3.3ROM操作指令...........................................................................................122.3.4DS18B20功能指令....................................................................................12第三章系统软件设计.................................................................................................153.1DSl8B20温度测量...........................................................................