?? decoder.vhd
字號:
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity decoder is
port(led :in std_logic_vector(3 downto 0);
decoder_led : out std_logic_vector(6 downto 0));
end entity;
architecture beha of decoder is
begin
process(led)
begin
case led is
when "0000" => decoder_led<="1111110";
when "0001" => decoder_led<="0110000";
when "0010" => decoder_led<="1101101";
when "0011" => decoder_led<="1111001";
when "0100" => decoder_led<="0110011";
when "0101" => decoder_led<="1011011";
when "0110" => decoder_led<="1011111";
when "0111" => decoder_led<="1110000";
when "1000" => decoder_led<="1111111";
when "1001" => decoder_led<="1111011";
when "1010" => decoder_led<="1110111";
when "1011" => decoder_led<="0011111";
when "1100" => decoder_led<="1001110";
when "1101" => decoder_led<="0111101";
when "1110" => decoder_led<="1001111";
when "1111" => decoder_led<="1000111";
when others => null;
end case;
end process;
end architecture;
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