Verilog编写的4x4矩阵键盘扫描代码，可用QurtursII直接打开工程。具体实现的功能为按下按键，数码管可相应显示0、1、...E、F-Verilog prepared 4x4 matrix keyboard scan code and it s directly available in QurtursII . The concrete realization of the function: key is pressed, the digital tube to the corres