.单片机原理及应用课程设计题目：基于T89C51设计可调式的电子钟学院：信息工程学院专业：计算机科学与技术班级：专升本班*名：***学号：**********指导老师：**..1概述..............................................................................................................................41.1课题研究的目的和意义........................................................................................42课题方案论证...............................................................................................................42.1系统总体设计要求...............................................................................................42.2系统模块结构论证...............................................................................................53系统硬件设计...............................................................................................................53.2最小单片机系统...................................................................................................63.3按键电路.............................................................................................................73.4显示电路.............................................................................................................84软件设计.......................................................................................................................94.1主程序................................................................................................................95软硬件联调及调试结果................................................................................................185.1调试步骤...........................................................................................................18结束语...........................................................................................................................18参考文献........................................................................................................................18附录..............................................................................................................