基于51单片机的矩阵键盘检测代码，检测键盘输入，同时把键值显示在数码管上。本文件包含Keil环境下的单片机程序代码和Protues硬件仿真电路图，方便大家调试。-Matrix based on 51 single keyboard detection code to detect keyboard input, while the control key on the digital display. This document contains the Keil microcontroller