copilot

• The counter inputs are A, B, and C (3-bit binary).
• The outputs control the segments of a 7-segment display.

Vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

entity seven_segment_display is
    Port ( A : in  STD_LOGIC;
           B : in  STD_LOGIC;
           C : in  STD_LOGIC;
           Segment_A : out STD_LOGIC;
           Segment_B : out STD_LOGIC;
           Segment_C : out STD_LOGIC;
           Segment_D : out STD_LOGIC;
           Segment_E : out STD_LOGIC;
           Segment_F : out STD_LOGIC;
           Segment_G : out STD_LOGIC);
end seven_segment_display;

Vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

architecture Behavioral of seven_segment_display is
begin
    process (A, B, C)
    begin
        -- Default all segments to off
        Segment_A <= '0';
        Segment_B <= '0';
        Segment_C <= '0';
        Segment_D <= '0';
        Segment_E <= '0';
        Segment_F <= '0';
        Segment_G <= '0';

        case (A & B & C) is
            when "000" =>  -- Display 0
                Segment_A <= '1';
                Segment_B <= '1';
                Segment_C <= '1';
                Segment_D <= '1';
                Segment_E <= '1';
                Segment_F <= '1';
            when "001" =>  -- Display 1
                Segment_B <= '1';
                Segment_C <= '1';
            when "010" =>  -- Display 2
                Segment_A <= '1';
                Segment_B <= '1';
                Segment_D <= '1';
                Segment_E <= '1';
                Segment_G <= '1';
            when "011" =>  -- Display 3
                Segment_A <= '1';
                Segment_B <= '1';
                Segment_C <= '1';
                Segment_D <= '1';
                Segment_G <= '1';
            when "100" =>  -- Display 4
                Segment_B <= '1';
                Segment_C <= '1';
                Segment_F <= '1';
                Segment_G <= '1';
            when "101" =>  -- Display 5
                Segment_A <= '1';
                Segment_C <= '1';
                Segment_D <= '1';
                Segment_F <= '1';
                Segment_G <= '1';
            when "110" =>  -- Display 6
                Segment_A <= '1';
                Segment_C <= '1';
                Segment_D <= '1';
                Segment_E <= '1';
                Segment_F <= '1';
                Segment_G <= '1';
            when others =>  -- Display 7
                Segment_A <= '1';
                Segment_B <= '1';
                Segment_C <= '1';
            end case;
    end process;
end Behavioral;

Vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

entity tb_seven_segment_display is
end tb_seven_segment_display;

architecture Behavioral of tb_seven_segment_display is
    component seven_segment_display
        Port ( A : in  STD_LOGIC;
               B : in  STD_LOGIC;
               C : in  STD_LOGIC;
               Segment_A : out STD_LOGIC;
               Segment_B : out STD_LOGIC;
               Segment_C : out STD_LOGIC;
               Segment_D : out STD_LOGIC;
               Segment_E : out STD_LOGIC;
               Segment_F : out STD_LOGIC;
               Segment_G : out STD_LOGIC);
    end component;

    signal A : STD_LOGIC := '0';
    signal B : STD_LOGIC := '0';
    signal C : STD_LOGIC := '0';
    signal Segment_A : STD_LOGIC;
    signal Segment_B : STD_LOGIC;
    signal Segment_C : STD_LOGIC;
    signal Segment_D : STD_LOGIC;
    signal Segment_E : STD_LOGIC;
    signal Segment_F : STD_LOGIC;
    signal Segment_G : STD_LOGIC;

begin
    uut: seven_segment_display Port map (A => A, B => B, C => C, Segment_A => Segment_A, Segment_B => Segment_B, Segment_C => Segment_C, Segment_D => Segment_D, Segment_E => Segment_E, Segment_F => Segment_F, Segment_G => Segment_G);

    process
    begin
        -- Test all input combinations
        for i in 0 to 7 loop
            $$A, B, C$$ <= std_logic_vector(to_unsigned(i, 3));
            wait for 10 ns;
        end loop;
        wait;
    end process;
end Behavioral;

• The entity declares the inputs and outputs.
• The architecture defines the combinational logic for the 7-segment display.
• The testbench simulates various input combinations to verify the functionality of the design.