基于单片机的数字温度计设计目录摘要............................................................................IABSTRACT.........................................................................II第一章绪论.......................................................................11.1选题研究背景和意义...........................................................11.2国内外研究现状...............................................................1第二章基于单片机的数字温度计的硬件电路的设计...........................................................................22.1控制方案的设计...............................................................22.2系统总体设计.................................................................22.3ATMEGA16单片机............................................................22.3.1ATmega16单片机的主要性能...............................................22.3.2ATmega16单片机的外部结构................................................32.4温度检测电路.................................................................42.4.1DS18B20简介.............................................................42.4.2DS18B20主要特点.........................................................42.4.3DS18B20引脚说明.........................................................52.4.4温度检测电路设计........................................................52.5按键电路.....................................................................52.5.1按键简介................................................................52.5.2按键电路设计............................................................62.6显示电路.....................................................................62.6.1LCD1602简介............................................................62.6.2LCD1602主要技术参数....................................................72.6.3LCD1602引脚说明........................................................72.6.4LCD1602控制指令说明....................................................72.6.5显示电路设计............................................................82.7报警电路.....................................................................82.7.1蜂鸣器简介..............................................................82.7.2报警电路设计............................................................9第三章基于单片机的数字温度计的软件设计.....................................................................................103.1AVRSTUDIO4软件设计思想....................................................103.2主程序流程图...............................................................113.3各子程序流程图..............................................................123.3.1温度采集初始化程序......................................................123.3.2读取温度子程序..........................................................133.3.3写字节子程序流程图......................................................143.3.4读字节子程序流程图......................................................153.3.5按键程序流程图..........................................................163.3.6报警程序流程图..........................................................16第四章基于单片机的数字温度计的系统焊接与调试.........................................................................174.1电路焊接...................................................................174.2系...
