VHDL描述4*4标准矩阵键盘扫描读取并点亮对应的LED灯，试验已经通过。可能还差一些按键的防抖，但不影响整体测试-VHDL descr iption of the standard 4* 4 matrix keyboard scan read and the corresponding LED lights lit the pilot had been adopted. Stabilization may be even worse some of the buttons, it does n

PLD实验代码，包括格雷码计数器、键盘扫描和LED点阵显示、SRAM读写、LCD12864显示汉字。-PLD experimental code, including the Gray code counter, keyboard scanning and LED dot matrix display, SRAM read and write, LCD12864 display Chinese characters.

verilog矩阵键盘扫描程序,编写简单易懂，4X4矩阵键盘读取，比通常的编写更加简单-verilog matrix keyboard scanner, writing easy to understand, 4X4 matrix keyboard to read, write more than the usual simple