目录第一章系统总体方案设计...................................................................................................11.1.总体设计..................................................................................................................11.2.主控芯片的设计.....................................................................................................11.3.显示方案的设计.....................................................................................................21.4.时钟模块的设计.....................................................................................................21.5.温度传感器电路的设计........................................................................................2第二章系统硬件设计...........................................................................................................32.1.电路原理图.............................................................................................................32.2.最小系统电路.........................................................................................................32.3.液晶显示模块电路................................................................................................42.4.DS1302模块电路图................................................................................................52.5.DS18B20模块电路图..............................................................................................62.6.按键输入模块.........................................................................................................72.7.蜂鸣器模块.............................................................................................................7第三章软件设计....................................................................................................................93.1.程序流程图设计.....................................................................................................93.1.1.总体程序流程图设计................................................................................93.1.2.1602液晶程序设计..................................