文档介绍：目录
一、摘要·········································································2
二、设计任务.····································································4
三、总体方案设计与论证···························································4
1、液晶显示模块·····························································4
2、实时时间计算模块·························································5
3、设置模块······························································6
四、总体方案组成框图··························································7
五、系统硬件设计·······························