hex2lcd.vhd

   1 library IEEE;
   2 use IEEE.STD_LOGIC_1164.all;
   3 use IEEE.STD_LOGIC_ARITH.all;
   4 use IEEE.STD_LOGIC_UNSIGNED.all;
   5
   6 --------------------------------------------------------------------------------
   7 -- This module implements combinatorial circuit converting a 4 digit binary
   8 -- number into the format of display segments.
   9 --------------------------------------------------------------------------------
  10
  11 entity hex2lcd is
  12   port (
  13     hex : in  std_logic_vector (3 downto 0);
  14     lcd : out std_logic_vector (6 downto 0));
  15 end hex2lcd;
  16
  17 --------------------------------------------------------------------------------
  18
  19 architecture behavioral of hex2lcd is
  20 begin
  21
  22   with hex select lcd <=
  23     "0000110" when "0001",
  24     "1011011" when "0010",
  25     "1001111" when "0011",
  26     "1100110" when "0100",
  27     "1101101" when "0101",
  28     "1111101" when "0110",
  29     "0000111" when "0111",
  30     "1111111" when "1000",
  31     "1101111" when "1001",
  32     "1110111" when "1010",
  33     "1111100" when "1011",
  34     "0111001" when "1100",
  35     "1011110" when "1101",
  36     "1111001" when "1110",
  37     "1110001" when "1111",
  38     "0111111" when others;
  39
  40 end Behavioral;
  41