yimaqi.vhd

来自「暑假时参加电子设计大赛曾经用EDA开发实现液晶显示TJUCI学校名的一个小程序」· VHDL 代码 · 共 26 行

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity YIMAQI is port   
(CKDSP,A2,A1,A0:  in std_logic;   
LED: out std_logic_vector(7 downto 0));
end;
architecture arc_YIMAQI of YIMAQI is
signal d2in:  std_logic_vector(2 downto 0);
begin
   d2in<=A2&A1&A0;
process(CKDSP)     
begin           
case d2in is
   when"000"=>LED<="11111110"; --1    
   when"001"=>LED<="11111101"; --2    
   when"010"=>LED<="11111011"; --3    
   when"011"=>LED<="11110111"; --4
   when"100"=>LED<="11101111"; --5    
   when"101"=>LED<="11011111"; --6    
   when"110"=>LED<="10111111"; --7    
   when"111"=>LED<="01111111"; --8
   when others=>LED<="00000000";
   end case;          
end process;
END arc_YIMAQI;