bcd2seg.vhd

来自「这是一个很实用的」· VHDL 代码 · 共 29 行

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity bcd2seg is
    Port (	din	:in std_logic_vector(3 downto 0);
    		seg	:out std_logic_vector(6 downto 0)
			);
end bcd2seg;

architecture behavioral of bcd2seg is

begin
	with din select
	seg<=	"0000001" when "0000",
			"1001111" when "0001",
			"0010010" when "0010",
			"0000110" when "0011",
			"1001100" when "0100",
			"0100100" when "0101",
			"0100000" when "0110",
			"0001111" when "0111",
			"0000000" when "1000",
			"0000100" when "1001",
			"1111111" when others;

end behavioral;