目录
1 概述.............................................................................................................................1
2 设计方案论证.............................................................................................................2
2.1 功能要求..........................................................................................................2
2.2 方案确定..........................................................................................................2
2.2.1 单片机芯片的选择方案和论证...........................................................2
2.2.2 显示模块选择方案和论证...................................................................3
2.2.3 时钟芯片的选择方案和论证...............................................................3
2.2.4 电路设计最终方案确定.......................................................................3
3 主控制器和外围器件.................................................................................................4
3.1AT89S52 单片机 ..............................................................................................4
3.2DS1302 时钟芯片.............................................................................................4
3.2.1DS1302 芯片介绍..................................................................................4
3.2.2DS1302
的应用 .....................................................................................8
3.3 数码管 LED .....................................................................................................8
3.4 译码器 74HC138 .............................................................................................9
3.5 锁存器 74LS244 ..............................................................................................9
4 硬件设计...................................................................................................................10
4.1 电路设计框图................................................................................................10
4.2 系统概述........................................................................................................10
4.3 电源设计........................................................................................................10
4.4 单片机的复位电路........................................................................................11
4.5 单片机系统的晶振电路................................................................................11
4.6 主电路设计....................................................................................................12
5 软件设计...................................................................................................................13
5.1 主程序设计....................................................................................................13
5.2 键盘子程序设计............................................................................................14
5.3 日历时钟子程序设计....................................................................................16
2301_784100592023-06-12感谢资源主分享的资源解决了我当下的问题，非常有用的资源。
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