ps2 keyboard with encoding ascii code to 7-segments screeen. LIBRARY ieee USE ieee.std_logic_1164.all USE ieee.std_logic_arith.all USE ieee.std_logic_unsigned.all ENTITY klawa IS PORT ( keyboard_clk, keyboard_data, clock_25MHz,

基于VHDL的4*4矩阵键盘扫描，包括按键次数计数功能，已处理防抖、长按、双键-Count function based on VHDL-4* 4 matrix keyboard scanning, including the number of keys, and have been processed image stabilization, long, double bond