利用按键开关控制点阵进行八进制数字显示Word文档下载推荐.docx

1、1分频模块（FENPIN）：对时钟进行1000分频。图2 分频模块图及管脚library ieee;Use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity fenpin is port（clk:in std_logic; clkout:out std_logic）;end fenpin;architecture r1 of fenpin issignal cnt:integer range 0 to 15;begin process（clk） begin if clkevent and clk=1 then if c

2、nt8 then clkout = 0; else end if; cnt = cnt +1; end process;end r1;2.消斗模块（XIAODOU）：对按键信号进行消斗，使案件输出稳定，最终使点阵显示稳定。图3 消抖模块图及管脚library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_ARITH.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity xiaodou is port（ clk : in std_logic; rst : d_click : out std_logic; c

3、lick : in std_logic ）;end xiaodou;architecture r1 of xiaodou is signal count : integer range 0 to 10000;-std_logic_vector（9 downto 0）; signal count1 : std_logic_vector（7 downto 0）; signal dout1 : std_logic;beginprocess （clk,rst） if rst = dout1 count1 = 00000000 elsif clk event and clk = if （click =

4、） and （count1（7） = ） and （dout1 = ） then= count1+1; elsif （click = d_click = dout1; end process;3.计数模块（JISHU）：进行八进制计数，输出控制显示模块的CH2.0 。图4 计数模块及管脚图entity jishu isport（ clk : count : out std_logic_vector（2 downto 0）;end jishu;architecture r1 of jishu issignal cn : std_logic_vector（2 downto 0）; count =

5、cn;process（clk,rst）if rst = cn 000elsif clk if cn = 111= cn+1;end if;4.功能控制模块（CNTA）：利用时钟进行十六进制计数，控制列信号从0000-1111变化。图5 功能控制模块及管脚图use ieee.std_logic_1164.all;entity cnta isport（clk: q:out std_logic_vector（3 downto 0）;end cnta;architecture r1 of cnta isprocess（clk） variable tmp:std_logic_vector（3 downt

6、o 0）;if clk if tmp=1111 tmp:=0000=tmp+1;q case sel is = doutnull; end case;001000000000000010000011111111111000000100000000100when 010 case sel is000000000001000000001110000111000001111100001100 when 0001111110001100000100011000110000010000110011000001000001001100000100000110110000010000001011000001

7、000000111100000111100001110000001110000011000000010000001100 when others = null;0110000000000100000000001000111100000001110011110000001111111011100000110111000010000010001100001000001000000000100000111000001110000001100000111000000110000011000100000000000010010000001100001001000000011000100100000000

8、10001001000000000100100000000000011010000000000000111000000000000001100000 end case;10100010000111100000001000111111000000100111101110000010011000001000001111110011100000111111011100000000000000110001100000000001110000000010001111100000011101111110000001100110001100000110010000010000010001000001000000111111111000000001111111100000000011111100000000000011000000000100000000000000011000000000000001110000000000000101100000000000010011000000000001000111000000000100001111110000010000011111000000110000000000 when othe