七选一表决器 显示同意不同意

七选一决器 显示同意不同意 表决器 Library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; use ieee.std_logic_arith; entity bjq7 is port(input1,input2:in std_logic_vector(6 downto 0); en,clr:in std_logic; c1,c2,c3:out std_logic_vector(2 downto 0)); end; architecture one of bjq7 is begin process(input1,input2,en,clr) variable cnt1,cnt2,cnt3:std_logic_vector (2 downto 0); begin cnt1:="000";cnt2:="000";cnt3:="000"; if(clr='0')then cnt1:="000";cnt2:="000";cnt3:="000"; elsif(en='1')then for i in 6 downto 0 loop if input1(i)='0' and input2(i)='1' then cnt1:=cnt1+1; elsif input1(i)='1' and input2(i)='0' then cnt2:=cnt2+1; elsif input1(i)='1' and input2(i)='1' then cnt3:=cnt3+1; end if; end loop; end if; c1<= cnt1; c2<= cnt2; c3<= cnt3; end process; end; BCD七段译码器 LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; ENTITY bcd7 IS PORT (A :IN STD_LOGIC_VECTOR(2 DOWNTO 0); Y :OUT STD_LOGIC_VECTOR(6 DOWNTO 0)); END ENTITY bcd7; ARCHITECTURE one OF bcd7 IS BEGIN PROCESS (A) BEGIN IF A="0000" THEN Y<="1111110"; ELSIF A="0001" THEN Y<="0110000"; ELSIF A="0010" THEN Y<="1101101"; ELSIF A="0011" THEN Y<="1111001"; ELSIF A="0100" THEN Y<="0110011"; ELSIF A="0101" THEN Y<="1011011"; ELSIF A="0110" THEN Y<="0011111"; ELSIF A="0111" THEN Y<="1110000"; ELSE Y<="0000000"; END IF; END PROCESS; END ; 计数器 library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity cnt3 is port(clk2:in std_logic; sel:out std_logic_vector (2 downto 0)); end; architecture one of cnt3 is signal cnt:std_logic_vector (2 downto 0); begin sel<=cnt; process(clk2) begin if clk2'event and clk2='1' then if (cnt="101") then cnt<="000"; else cnt<=cnt+2; end if; end if; end process; end; 三选一 library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity mux31 is port( A:in std_logic_vector(2 downto 0); B:in std_logic_vector(2 downto 0); C:in std_logic_vector(2 downto 0); s:in std_logic_vector(2 downto 0); y: out std_logic_vector(2 downto 0); co2,co1:out std_logic); end; architecture one of mux31 is begin y<=C when s="000" else B when s="010" else A when s="100"; process(A,B,C) begin if(A>B) then co1<='1' ;co2<='0'; else co1<='0';co2<='1'; end if; end process; end ;