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 program code environment and Protues hardware simulation circuit, to facilitate debugging.