bin2led.vhd

在FPGA上实现的出租车计价器VHDL源代码

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_arith.all;
entity bin2led is
  port (bin : in std_logic_vector(3 downto 0);
        led : out std_logic_vector(7 downto 0) );
end bin2led;
architecture arch of bin2led is
begin
  with bin select
    led<="11110011" when "0001",
	      "01001001" when "0010",
			"01100001" when "0011",
			"00110011" when "0100",
			"00100101" when "0101",
			"00000101" when "0110",
			"11110001" when "0111",
			"00000001" when "1000",
			"00100001" when "1001",			
			"10000001" when "0000",
			"11111111" when others;
end arch;