基于单片机的数字时钟加闹钟的设计与制作

基于单片机的数字时钟加闹钟的设计与制作

题 目 基于单片机的数字时钟加闹钟的设计与制作

1绪论 ...................................................................................................................................................................... 2 1.1引言 ............................................................................................................................................................... 2 1.2研究目的 ....................................................................................................................................................... 2 1.3系统基本方案选择和论证 ........................................................................................................................... 2 1.3.1单片机芯片的选择方案和论证： ........................................................................................................ 2 1.3.2显示模块选择方案和论证： ................................................................................................................ 2 1.3.3时钟芯片的选择方案和论证： ............................................................................................................ 2 1.3.4电路设计最终方案确定 ........................................................................................................................ 3 1.4 硬件系统框图 .............................................................................................................................................. 3 2 主要元件介绍 ..................................................................................................................................................... 4 2.1 STC89C52以及最小系统介绍 .................................................................................................................... 4 2.1.1 ST89C52单片机： ............................................................................................................................... 4 2.1.2 计时芯片DS1302： ............................................................................................................................. 5 2.1.3字符液晶显示屏LCD1602资料： ...................................................................................................... 6 2.1.4 电源模块： ........................................................................................................................................... 8 3. 硬件电路连接图： ............................................................................................................................................ 8 3.1单片机的连接图 ........................................................................................................................................... 8 3.2 DS1302计时模块 ......................................................................................................................................... 9 3.3 LCD1602液晶显示模块 .............................................................................................................................. 9 3.4 按键模块 ...................................................................................................................................................... 9 4. 系统的软件设计： .......................................................................................................................................... 10 4.1 软件设计流程图： .................................................................................................................................... 10 5. 系统的调试： .................................................................................................................................................. 11 6. 总结： .............................................................................................................................................................. 12 参考文献 ............................................................................................................................................................... 13 附录一： ............................................................................................................................................................... 14 附录二： ............................................................................................................................................................... 15 附录三： ............................................................................................................................................................... 29

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