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Multiplexor ( codigo ) vhdl

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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

entity Multiplexor is
    Port ( a : in  STD_LOGIC;
           b : in  STD_LOGIC;
           c : in  STD_LOGIC;
           d : in  STD_LOGIC;
           sel : in  STD_LOGIC_VECTOR (1 downto 0);
           x : inout  STD_LOGIC);
end Multiplexor;

architecture Behavioral of Multiplexor is
signal g:std_logic;
begin

process (a,b,c,d,sel)
begin

if sel = "00" then
x<=a;

elsif sel = "01" then
x<=b;

elsif sel = "10" then
x<=c;
else
x<=d;

end if;
end process;
end Behavioral;
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