目 录
摘 要 ....................................................................................................................................I
Abstract ...............................................................................................................................II
第一章 系统设计方案 .......................................................................................................1
1.1 系统方案的确定 ...................................................................................................1
第二章 硬件设计 ................................................................................................................2
2.1 主控芯片 ..............................................................................................................2
2.1.1 STC89C54 单片机......................................................................................2
2.1.2 单片机信号引脚 ........................................................................................2
2.1.4 51 单片机最小系统...................................................................................3
2.1.5 中断控制 ....................................................................................................4
2.2 I/O 扩展芯片 ........................................................................................................6
2.3 驱动芯片 ...............................................................................................................7
2.4 汉字显示点阵屏....................................................................................................9
2.4.1 点阵屏模块 ................................................................................................9
2.4.2 8*8 点阵工作原理说明 .............................................................................9
2.5 电源电路............................................................................................................10
2.6 单片机的时钟电路............................................................................................10
2.7 单片机的复位电路.............................................................................................11
2.8 原理框图 .............................................................................................................11
2.9 整体硬件设计电路 .............................................................................................12
第三章 软件设计 ..............................................................................................................13
3.1 点阵屏主程序流程图 .........................................................................................13
3.2 装载函数流程图..................................................................................................13
3.3 显示函数流程图..................................................................................................14
第四章 系统调试 ..............................................................................................................15
4.1 硬件调试 .............................................................................................................15
4.2 软件调试 .............................................................................................................15
4.2.1 程序跳转错 ..............................................................................................15
结束语 ...............................................................................................................................16
参考文献 ...........................................................................................................................17
附录 1 ................................................................................................................................18
附录 2 ................................................................................................................................19
附录 3 实物图片 ...............................................................................................................23
致 谢 .................................................................................................................................24
