使用的是西安交通大学的单片机开发板，用以完成时钟显示，以及日期滚动显示，秒表功能，闹钟功能，并且闹钟铃音可变，键盘全部定义。-Xi' an Jiaotong University are using a microcontroller development board to complete the clock display, as well as the date scrolling display, stopwatch function, alarm clock function,

西安电子科技大学单片机基础教程ppt版，内有单片机进阶知识-Xi' an University of Electronic Science and Technology of microcontroller based tutorial ppt version