mux21a.vhd

实现7人表决功能

LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL;
ENTITY mux21a IS
PORT(a,b,s: IN STD_LOGIC;
     Y: OUT STD_LOGIC
    );
END ENTITY mux21a;
ARCHITECTURE one OF mux21a IS
BEGIN
PROCESS (a,b,s)
BEGIN
IF s='0' THEN
y<=a;ELSE
y<=b;
END IF;
END PROCESS;
END ARCHITECTURE one;