4_4keyboard

代码说明：

  基于C51单片机的4*4矩阵键盘扫描。有仿真和程序，数码管显示，可以用于学习矩阵键盘扫描的基础知识。并可以进行扩展。(Based on the C51 microcontroller 4* 4 matrix keyboard scanning. There simulation and procedures, digital display, can be used to learn the basics of the keyboard scan matrix. And can be extended.)