单片机数字温度计课程设计报告..doc

目 录 1.设计任务.................................................... ................ ................ .............................1 1.1 设计目的........................................... .............. ................................................1 1.2 设计指标................................ ...................... .......................................................1 1.3 设计要求................................................ ............................................................1 2. 设计思路与总体框图................................................ ...............................................1 3. 系统硬件电路的设计............................................... ................................................2 3.1主控电路............................................... ... .........................................................2 3.2液晶显示电路........................................... .........................................................3 3.3按键电路....... .... ................................................... ............................................3 3.4报警电路........................ .................. ................................................................4 系统仿真设计...........................................................................................................4 4.1仿真原理图............................................... ................ ...... .................................4 4.2各功能元件的分析.............................................................................................5 5. 系统软件设计.........................................................................................................10 5.1 主程序...............................................................................................................11 5.2 读出温度子程序...............................................................................................11 5.3 温度转换命令子程序.......................................................................................12 5.4 设计温度子程序.............