Verilog语言的四乘四的键盘扫描程序。共阴共阳级数码管均能显示。-4 multiply 4 keyboard scan in FPGA

fpga与4*8键盘盘和数码管结合的测试程序 -the fpga with 4* 8 keyboard tray and digital tube binding of test program

FPGA实验箱上4x4键盘扫描程序，行与列各组成4位代码，低电位为按下，高电位为未按下。-On FPGA experimental box 4x4 keyboard scanning procedures, the rows and columns each consisting of 4-digit code, press the low potential and high potential for the next pressed.

基于FPGA的4*4矩阵键盘输入，1602液晶屏显示，以及四个LED灯输出。(Based on the 4*4 matrix keyboard input of the FPGA, 1602 LCD screen display, and four LED lights output.)