文档介绍：单片机开发板设计心得体会篇一:在个人的单片机开发板c语言程序及模块设计总结在个人的单片机开发板c语言程序及模块设计总结目录 Keil软件的使用...................................................................................................错误!未定义书签。*LED显示输出*....................................................................................................................................2 ..............................................................................................................................................3 ............................................................................................................................4 ..........................................................................................................................................7 ................................................................................................................................8 ×4矩阵式键盘识别......................................................................................................................11 ...............................................................................................................................12 ---秒计时设计...........................................................................................14 ......................................................................................................................16 .......................................................................................................19 ........................................................................................................27 ..................................................................................................................30 .........................................................................................34 ..................................................................................................