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- library IEEE;
- use IEEE.STD_LOGIC_1164.all;
- entity decoder1 is
- port(
- a : in STD_LOGIC_VECTOR(1 downto 0);
- b : out STD_LOGIC_VECTOR(3 downto 0)
- );
- end decoder1;
- architecture bhv of decoder1 is
- begin
- process(a)
- begin
- if (a="00") then
- b <= "0001";
- elsif (a="01") then
- b <= "0010";
- elsif (a="10") then
- b <= "0100";
- else
- b <= "1000";
- end if;
- end process;
- end bhv;
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