数字电路与逻辑设计实验报告简易电磁炉控制器的设计与实现

1、北京邮电大学 数字电路实验北京邮电大学数字电路与逻辑设计实验报告实验名称：简易电磁炉控制器的设计与实现 班级：2011211122学号：班内序号：姓名：指导老师： 目录一、报告概要 1、课题名称2、报告摘要3、关键字二、设计任务和要求三、系统设计 1、设计思路2、总体框图（1） 系统结构框图（2） 模块划分方框图（3） ASM图（4） MDS图3、分块设计（1）分频模块（2）烹饪模式模块（3）火力调节模块（4）时间控制模块（5）数码管模块（6）关机模块 （7）防抖模块4、总体设计四、实现功能说明 1、已完成功能 2、器件的资源占用情况 3、关键波形仿真图及波形分析 4、必要的测试方法 五、故障

2、及问题分析六、实验总结与结论七、所用元器件及测试仪表清单八、完整源程序九、参考文献一、报告概要 1、课题名称 简易电磁炉控制器的设计与实现2、 报告摘要本次实验通过VHDL语言编程，Quartus II仿真及开发板上调试，模仿电磁炉的各种基本功能，包括烹饪模式选择，火力调节，定时及不定时选择，数码管、点阵显示、蜂鸣器提示等功能。充分运用模块编程的思想，利用状态机及自顶向下的设计方法，实现任务所要求的全部基本功能，并且在原有功能上实现了部分拓展。3、关键字 电磁炉控制器，VHDL，自顶向下2、 设计任务和要求 基本要求：1、烹饪模式选择：电磁炉的烹饪模式有火锅、煎炒、爆炒、煲汤和蒸炖五档可选。用

3、一个按键（BTN7）实现烹饪档位的选择（按下此键，依上述顺序依次变化），用点阵显示当前的烹调档位（火锅显示H、煎炒显示J、爆炒显示B、煲汤显示T、蒸炖显示Z），烹调档位的选择按键同时也是加热的开始按键，即烹调档位选定的同时电磁炉就以最大功率开始加热，没有选择时电磁炉处于停止状态，点阵不显示。 2、火力调节：电磁炉的火力分5档可调： 1900W-1500W-1100W-600W-100W，用数码管DISP3-DISP0显示当前的火力，用两个按键（BTN6和BTN5）实现火力的增加或减少，烹调过程中，除爆炒模式外，其它模式均可以随时可以调节火力，爆炒模式只能以最高功率加热。 3、定时功能：用一个按

4、键（BTN4）实现定时设置，按下定时键，蜂鸣器响一声，每按一次定时键，定时时间以5-10-30-60秒钟的顺序依次递增，定时设定完毕后，电磁炉开始倒计时。用数码管DISP5和DISP4显示定时档位和倒计时的过程，倒计时时间到后，电磁炉自动停止加热并关机。 4、不进行定时操作时，电磁炉以默认加热时间进行加热。蒸炖模式的默认时间为20秒钟；爆炒模式的默认时间是3秒钟，爆炒3秒钟后自动返回煎炒模式；其他模式的默认时间为90秒。 5、用点亮的发光二极管LD4表示开机加热，熄灭表示关机。 6、设置关闭键，任何时候按下关闭键即可将电磁炉关机。扩展功能：1、倒计时过程中通过8个发光二级管显示倒计时进度。2、

5、模式显示部分将点阵分为左右两半，采用不同的颜色显示。3、倒计时结束后放一段乐曲提示。（未实现）三、系统设计 1、设计思路简易电磁炉的设计过程采用自顶向下设计方法，从目的，即整个系统功能出发，按一定规则将系统划分为若干个子系统和功能模块，并且继续划分成更小的模块，直到每部分都能较为简单的实现。在实验中，先根据要实现的功能，将整个程序设计成了烹饪模式选择、火力调节、时间调节（倒计时与否）、微波炉状态切换这4个主要的子系统，同时设计适合不同模块工作的分频部分和与之相对应的显示部分。在这些子系统的设计中，最常用到的是利用状态机的原理实现电磁炉各个状态之间的转换。如状态选择部分通过按键BTN4实现火锅、

6、煎炒、爆炒、蒸炖和煲汤的切换；火力选择部分通过按键实现1900W到100W的切换。 2、总体框图 (1)系统结构图 (2) 系统逻辑划分方框图(3)ASM图(4)MDS图 3、分块设计 （1）分频模块 这部分按照教学网站上所给的50M分频器的实例设计了三个分频器，利用输入的50MHz时钟，分频后为1Hz、100Hz、1000Hz时钟。代码如下：LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY MDCL ISPORT(CLK: IN STD_LOGIC;-时钟);END MDCL;ARC

7、HITECTURE WY OF MDCL ISSIGNAL CNT1: INTEGER RANGE 0 TO 24999999; -频率1Hz计数SIGNAL CNT100: INTEGER RANGE 0 TO 249999; -频率100Hz计数SIGNAL CNT1000: INTEGER RANGE 0 TO 24999; -频率1000Hz计数SIGNAL CLK_FP: STD_LOGIC_VECTOR (2 DOWNTO 0); -分频后的时钟信号BEGINP1：PROCESS(CLK)BEGINIF CLK'EVENT AND CLK = '1' THE

8、NIF CNT1 = 24999999 THENCNT1<=0;CLK_FP(0)<= NOT CLK_FP(0);END IF;CNT1 <= CNT1 + 1;END IF;END PROCESS P1;P2：PROCESS(CLK)BEGINIF CLK'EVENT AND CLK = '1' THENIF CNT100 = 249999 THENCNT100<=0;CLK_FP(1)<= NOT CLK_FP(1);END IF;CNT100 <= CNT100 + 1;END IF;END PROCESS P2;P3：PRO

9、CESS(CLK)BEGINIF CLK'EVENT AND CLK = '1' THENIF CNT1000 = 24999 THENCNT1000<=0;CLK_FP(2)<= NOT CLK_FP(2);END IF;CNT1000 <= CNT1000 + 1;END IF;END PROCESS P3;END WY(2)烹饪模式选择模块模式选择是核心模块之一，也是程序的入口之处。在这个模块中根据BTN7的变化，利用状态机改变MOSHI端口上电平的输出，由于有六个状态（外加一个等待状态），故MOSHI为三变量组成的向量。烹饪选择后MOSHI信号

10、交由点阵显示部分显示输出。模式选择代码如下：LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY MDCL IS PORT(CLK: IN STD_LOGIC;-时钟MOSHI: IN STD_LOGIC;-模式选择BTN7: IN STD_LOGIC;-模式更改按键);END MDCL;ARCHITECTURE WY OF MDCL IS TYPE STATE_TYPE IS (WAIT,HG,JC,BC,BT,ZD);SIGNAL CLK_FP: STD_LOGIC_VECTOR (2

11、 DOWNTO 0); -分频后的时钟信号SIGNAL MOSHI: STATE_TYPE; -加热模式SIGNAL CURRENT_STATE: STD_LOGIC; -当前状态，是否为等待SIGNAL MSXZ: STD_LOGIC_VECTOR(2 DOWNTO 0); -加热模式的状态组合BEGIN P1：PROCESS(CLK_FP(0),BTN7)BEGINIF(CURRENT_STATE= '0') THENIF ( CLK_FP(0)'EVENT AND CLK_FP(0) = 1 ) THENCASE MOSHI IS WHEN WAIT =>

12、IF( BTN7 = '1') THEN MOSHI<= HG ;MSXZ<= "001"CURRENT_STATE <= '1' END IF; WHEN HG => IF( BTN7 = '1') THEN MOSHI<= JC ; MSXZ<= "010"CURRENT_STATE <= '1' END IF ; WHEN JC => IF( BTN7 = '1') THEN MOSHI<= BC ; MSXZ<

13、;= "011"CURRENT_STATE <= '1' END IF ; WHEN BC => IF( BTN7 = '1') THEN MOSHI<= BT ; MSXZ<= "100"CURRENT_STATE <= '1' END IF ; WHEN BT => IF( BTN7 = '1') THEN MOSHI<= ZD ; MSXZ<= "101"CURRENT_STATE <= '1'

14、END IF ; WHEN ZD => IF( BTN7 = '1') THEN MOSHI<= HG ; MSXZ<= "001"CURRENT_STATE <= '1' END IF ;END CASE;END IF;END IF;END PROCESS; END WY点阵扫描与数码管原理类似，数码管为位选每时刻选通一位，推送八位序列控制显示；而点阵扫描为对每一行进行选通，即对行扫描，列信息即为控制显示。需要特别注意的是，点阵（0,0）的位置在左下角。点阵显示代码如下：LIBRARY IEEE;USE IEEE.S

15、TD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY MDCL ISPORT(CLK: IN STD_LOGIC;-时钟ROW: OUT STD_LOGIC_VECTOR(7 DOWNTO 0);COL: OUT STD_LOGIC_VECTOR(7 DOWNTO 0););END MDCL;ARCHITECTURE WY OF MDCL ISSIGNAL CLK_FP: STD_LOGIC_VECTOR (2 DOWNTO 0); -分频后的时钟信号SIGNAL MSXZ: STD_LOGIC_VECTOR(2 DOWNTO 0);

16、 -加热模式的状态组合SIGNAL DZSM: STD_LOGIC_VECTOR(2 DOWNTO 0); -点阵辅助扫描显示SIGNAL CURRENT_STATE: STD_LOGIC; -当前状态，是否为等待P1：PROCESS(CLK_FP(2),MSXZ)BEGINIF (CLK_FP(2)'EVENT AND CLK_FP(2)='1') THENIF CURRENT_STATE ='1' THENCASE MSXZ ISWHEN "001"=> CASE DZSM ISWHEN "000" =&

17、gt; DZSM <="001" ROW <="01111111" COL<="01100110"WHEN "001" => DZSM <="010" ROW <="10111111" COL<="01100110"WHEN "010" => DZSM <="011" ROW <="11011111" COL<="0110

18、0110"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="01111110"WHEN "100" => DZSM <="101" ROW <="11110111" COL<="01111110"WHEN "101" => DZSM <="110" ROW <="

19、11111011" COL<="01100110"WHEN "110" => DZSM <="111" ROW <="11111101" COL<="01100110"WHEN "111" => DZSM <="000" ROW <="11111110" COL<="01100110"END CASE;WHEN "010"=>

20、CASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="00111110"WHEN "001" => DZSM <="010" ROW <="10111111" COL<="00001100"WHEN "010" => DZSM <="011" ROW <=&quo

21、t;11011111" COL<="00001100"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="00001100"WHEN "100" => DZSM <="101" ROW <="11110111" COL<="00001100"WHEN "101" => DZSM &

22、lt;="110" ROW <="11111011" COL<="01101100"WHEN "110" => DZSM <="111" ROW <="11111101" COL<="00111100"WHEN "111" => DZSM <="000" ROW <="11111110" COL<="00011000"

23、END CASE;WHEN "011"=> CASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="01111100"WHEN "001" => DZSM <="010" ROW <="10111111" COL<="01000010"WHEN "010" => DZSM

24、 <="011" ROW <="11011111" COL<="01000010"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="01111100"WHEN "100" => DZSM <="101" ROW <="11110111" COL<="01000010&quo

25、t;WHEN "101" => DZSM <="110" ROW <="11111011" COL<="01000010"WHEN "110" => DZSM <="111" ROW <="11111101" COL<="01000010"WHEN "111" => DZSM <="000" ROW <="11111110

26、" COL<="01111100"END CASE;WHEN "100"=> CASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="01111110"WHEN "001" => DZSM <="010" ROW <="10111111" COL<="01111110&q

27、uot;WHEN "010" => DZSM <="011" ROW <="11011111" COL<="00011000"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="00011000"WHEN "100" => DZSM <="101" ROW <="111101

28、11" COL<="00011000"WHEN "101" => DZSM <="110" ROW <="11111011" COL<="00011000"WHEN "110" => DZSM <="111" ROW <="11111101" COL<="00011000"WHEN "111" => DZSM <=&quo

29、t;000" ROW <="11111110" COL<="00011000"END CASE;WHEN "101"=> CASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="11111111"WHEN "001" => DZSM <="010" ROW <="1011

30、1111" COL<="00000010"WHEN "010" => DZSM <="011" ROW <="11011111" COL<="00000100"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="00001000"WHEN "100" => DZSM <=&q

31、uot;101" ROW <="11110111" COL<="00010000"WHEN "101" => DZSM <="110" ROW <="11111011" COL<="00100000"WHEN "110" => DZSM <="111" ROW <="11111101" COL<="01000000"WHEN &

32、quot;111" => DZSM <="000" ROW <="11111110" COL<="11111111"END CASE;WHEN OTHERS => CASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="00000000"WHEN "001" => DZSM <="01

33、0" ROW <="10111111" COL<="00000000"WHEN "010" => DZSM <="011" ROW <="11011111" COL<="00000000"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="00000000"WHEN "1

34、00" => DZSM <="101" ROW <="11110111" COL<="00000000"WHEN "101" => DZSM <="110" ROW <="11111011" COL<="00000000"WHEN "110" => DZSM <="111" ROW <="11111101" COL<

35、="00000000"WHEN "111" => DZSM <="000" ROW <="11111110" COL<="00000000"END CASE;END CASE;ELSECASE DZSM ISWHEN "000" => DZSM <="001" ROW <="01111111" COL<="00000000"WHEN "001" =&

36、gt; DZSM <="010" ROW <="10111111" COL<="00000000"WHEN "010" => DZSM <="011" ROW <="11011111" COL<="00000000"WHEN "011" => DZSM <="100" ROW <="11101111" COL<="0000

37、0000"WHEN "100" => DZSM <="101" ROW <="11110111" COL<="00000000"WHEN "101" => DZSM <="110" ROW <="11111011" COL<="00000000"WHEN "110" => DZSM <="111" ROW <="

38、11111101" COL<="00000000"WHEN "111" => DZSM <="000" ROW <="11111110" COL<="00000000"END IF;END IF;END PROCESS;END WY; (3)火力选择模块火力选择模块的由两个按键（BTN6和BTN5）实现火力的增加或减少，时钟信号给的是1KHz。显示部分需要数码管DISP3-DISP0显示当前的火力档位，输出为09的数字型，输出部分由单独的数码管显示模块完成

39、这里不做详述。根据火力大小种类可知：三变量组合（状态机）即可满足。注意：烹饪模式类型对火力选择的影响：爆炒模式不能改变火力，只能以最高功率加热。火力选择代码如下:LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY MDCL IS PORT(CLK: IN STD_LOGIC;-时钟HUOLI: IN STD_LOGIC;-火力选择BTN6: IN STD_LOGIC;-火力增强按键BTN5: IN STD_LOGIC;-火力减小按键);END MDCL;ARCHITECTURE WY O

40、F MDCL IS TYPE HUOLI_TYPE IS (1900W,1500W,1100W,600W,100W);SIGNAL CLK_FP: STD_LOGIC_VECTOR (2 DOWNTO 0); -分频后的时钟信号SIGNAL HLMOSHI: HUOLI_TYPE; -加热模式SIGNAL CURRENT_STATE: STD_LOGIC; -当前状态，是否为等待SIGNAL MSXZ: STD_LOGIC_VECTOR(2 DOWNTO 0); -加热模式的状态组合SIGNAL HLXZ: STD_LOGIC_VECTOR(2 DOWNTO 0); -火力大小的状态组合BEG

41、IN P1：PROCESS(CLK_FP(0),BTN6,BTN5)BEGINIF (CURRENT_STATE = '1') THEN IF(MSXZ /= "011") THENIF ( CLK_FP(0)'EVENT AND CLK_FP(0) = 1 ) THENCASE HLMOSHI IS WHEN 1900W => IF( BTN6 = '0' AND BTN5 = '1') THEN HLMOSHI<= 1500W;ELSE HLMOSHI <= 1900W ;HLXZ<= &#

42、39;001' END IF; WHEN 1500W => IF( BTN6 = '0' AND BTN5 = '1') THEN HLMOSHI<= 1100W;ELSEIF (BTN6 = '1' AND BTN5 = 0) THEN HLMOSHI <= 1900W; ELSE HLMOSHI <=1500;HLXZ<= '010' END IF; WHEN 1100W => IF( BTN6 = '0' AND BTN5 = '1') THEN H

43、LMOSHI<= 600W;ELSEIF (BTN6 = '1' AND BTN5 = 0) THEN HLMOSHI <= 1500W;ELSE HLMOSHI <=1100;HLXZ<= '011' END IF;WHEN 600W => IF( BTN6 = '0' AND BTN5 = '1') THEN HLMOSHI<= 100W;ELSEIF (BTN6 = '1' AND BTN5 = 0) THEN HLMOSHI <= 1100W; ELSE HLMOS

44、HI <=600;HLXZ<= '100' END IF;WHEN 100W => IF (BTN6 = '1' AND BTN5 = 0) THEN HLMOSHI <= 600W; ELSE HLMOSHI <=100;HLXZ<= '101' END IF;END CASE;END IF; ELSE HLMOSHI <=1900W; END IF;END IF;END PROCESS; END WY（4）时间模块该模块包含的内容丰富，可以划分为定时、不定时部分以及数码管显示部分和倒计时选择部分。定时

45、、不定时部分由另一段代码完成，用来根据是否输入BTN4以及BTN4的此数判断需要倒计时的时间（更改TIME）。代码中的TIME代表不同的倒计时，综合考虑了定时和非定时两种状态，依次是3s、5s、10s、20s、30s、60s、90s七种状态。主要代码如下：LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.ALL;USE IEEE.STD_LOGIC_UNSIGNED.ALL;ENTITY MDCL ISPORT(CLK: IN STD_LOGIC;-时钟);END MDCL;ARCHITECTURE WY OF MDCL ISSIGNAL CLK_FP: STD_LOG

46、IC_VECTOR (2 DOWNTO 0); -分频后的时钟信号SIGNAL CAT: STD_LOGIC_VECTOR (2 DOWNTO 0); -位选信号SIGNAL TIME: STD_LOGIC_VECTOR(2 DOWNTO 0); -与加热有关的时间状态SIGNAL CURRENT_STATE: STD_LOGIC; -当前状态，是否为等待SIGNAL DISP5: STD_LOGIC_VECTOR (7 DOWNTO 0); -倒计时高位SIGNAL DISP4: STD_LOGIC_VECTOR (7 DOWNTO 0); -倒计时低位SIGNAL END: STD_LOG

47、IC; - 时间终止信号;P1：PROCESS(CLK_FP(0),MSXZ)BEGINIF CLK_FP(0)'EVENT AND CLK_FP(0)= '1' THEN IF CURRUNT_STATE = '1' THEN CASE TIME ISWHEN "001" => -3SDISP5 <= "11111100"CASE DISP4 IS WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN &qu

48、ot;11011010" => DISP4 <= "01100000" -2-1WHEN "01100000" => DISP4 <= "11111100" -1-0WHEN OTHERS => DISP4 <="00000000"END CASE;WHEN "010" => -5SDISP5 <= "11111100"CASE DISP4 IS WHEN "10110110" => DISP

49、4 <= "01100110"-5-4WHEN "01100110" => DISP4 <= "11110010"-4-3WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN "11011010" => DISP4 <= "01100000" -2-1WHEN "01100000" => DISP4 <= "11111100&quo

50、t; -1-0WHEN OTHERS => DISP4 <="00000000"END CASE;WHEN "011" => -10SCASE DISP5 ISWHEN "01100000" => DISP5 <= "11111100" -1-0WHEN OTHERS => DISP4 <="00000000"END CASE;CASE DISP4 ISWHEN "11110110" => DISP4 <= "1

51、1111110" -9-8WHEN "11111110" => DISP4 <= "11100000" -8-7WHEN "11100000" => DISP4 <= "10111110" -7-6WHEN "10111110" => DISP4 <= "10110110" -6-5WHEN "10110110" => DISP4 <= "01100110" -5-4WHEN &

52、quot;01100110" => DISP4 <= "11110010" -4-3WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN "11011010" => DISP4 <= "01100000" -2-1WHEN "01100000" => DISP4 <= "11111100" -1-0WHEN OTHERS => DISP4 <=

53、"00000000"WHEN "100" => -20SCASE DISP4 IS WHEN "11110110" => DISP4 <= "11111110" -9-8WHEN "11111110" => DISP4 <= "11100000" -8-7WHEN "11100000" => DISP4 <= "10111110" -7-6WHEN "10111110" =&

54、gt; DISP4 <= "10110110" -6-5WHEN "10110110" => DISP4 <= "01100110" -5-4WHEN "01100110" => DISP4 <= "11110010" -4-3WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN "11011010" => DISP4 <= "01

55、100000" -2-1WHEN "01100000" => DISP4 <= "11111100" -1-0WHEN "11111100" => IF DISP5 /= "11111100" THEN DISP4 <= "11110110" ELSE DISP4 <= "00000000" WHEN OTHERS => DISP4 <= "00000000"END CASE;CASE DISP5 IS

56、WHEN "11011010" => IF DISP4 ="11111100" THEN DISP5 <= "01100000" -2-1WHEN "01100000" => IF DISP4 ="11111100" THEN DISP5 <= "11111100" -1-0WHEN OTHERS => DISP5 <= "00000000"END CASE;WHEN "101" => -30S

57、CASE DISP4 IS WHEN "11110110" => DISP4 <= "11111110" -9-8WHEN "11111110" => DISP4 <= "11100000" -8-7WHEN "11100000" => DISP4 <= "10111110" -7-6WHEN "10111110" => DISP4 <= "10110110" -6-5WHEN "

58、;10110110" => DISP4 <= "01100110" -5-4WHEN "01100110" => DISP4 <= "11110010" -4-3WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN "11011010" => DISP4 <= "01100000" -2-1WHEN "01100000" => DI

59、SP4 <= "11111100" -1-0WHEN "11111100" => IF DISP5 /= "11111100" THEN DISP4 <= "11110110" ELSE DISP4 <= "00000000" WHEN OTHERS => DISP4 <= "00000000"END CASE;CASE DISP5 IS WHEN "11110010" => IF DISP4 ="111

60、11100" THEN DISP5 <= "11011010" -3-2WHEN "11011010" => IF DISP4 ="11111100" THEN DISP5 <= "01100000" -2-1WHEN "01100000" => IF DISP4 ="11111100" THEN DISP5 <= "11111100" -1-0WHEN OTHERS => DISP5 <= "

61、00000000"END CASE;WHEN "110" => -60SCASE DISP4 IS WHEN "11110110" => DISP4 <= "11111110" -9-8WHEN "11111110" => DISP4 <= "11100000" -8-7WHEN "11100000" => DISP4 <= "10111110" -7-6WHEN "10111110"

62、 => DISP4 <= "10110110" -6-5WHEN "10110110" => DISP4 <= "01100110" -5-4WHEN "01100110" => DISP4 <= "11110010" -4-3WHEN "11110010" => DISP4 <= "11011010" -3-2WHEN "11011010" => DISP4 <= "

63、;01100000" -2-1WHEN "01100000" => DISP4 <= "11111100" -1-0WHEN "11111100" => IF DISP5 /= "11111100" THEN DISP4 <= "11110110" ELSE DISP4 <= "00000000" WHEN OTHERS => DISP4 <= "00000000"END CASE;CASE DISP5

64、IS WHEN "10111110" => IF DISP4 ="11111100" THEN DISP5 <= "10110110" -6-5WHEN "10110110" => IF DISP4 ="11111100" THEN DISP5 <= "01100110" -5-4WHEN "01100110" => IF DISP4 ="11111100" THEN DISP5 <= "1

65、1110010" -4-3WHEN "11110010" => IF DISP4 ="11111100" THEN DISP5 <= "11011010" -3-2WHEN "11011010" => IF DISP4 ="11111100" THEN DISP5 <= "01100000" -2-1WHEN "01100000" => IF DISP4 ="11111100" THEN DISP

66、5 <= "11111100" -1-0WHEN OTHERS => DISP5 <= "00000000"END CASE;WHEN "111" => -90SCASE DISP4 IS WHEN "11110110" => DISP4 <= "11111110" -9-8WHEN "11111110" => DISP4 <= "11100000" -8-7WHEN "11100000"

67、 => DISP4 <= "10111110" -7-6WHEN "10111110" => DISP4 <= "10110110" -6-5WHEN "10110110" => DISP4 <= "01100110" -5-4WHEN "01100110" => DISP4 <= "11110010" -4-3WHEN "11110010" => DISP4 <= "

68、;11011010" -3-2WHEN "11011010" => DISP4 <= "01100000" -2-1WHEN "01100000" => DISP4 <= "11111100" -1-0WHEN "11111100" => IF DISP5 /= "11111100" THEN DISP4 <= "11110110" ELSE DISP4 <= "00000000" W

69、HEN OTHERS => DISP4 <= "00000000"END CASE;CASE DISP5 IS WHEN "11110110" => IF DISP4 ="11111100" THEN DISP5 <= "11111110" -9-8WHEN "11111110" => IF DISP4 ="11111100" THEN DISP5 <= "11100000" -8-7WHEN "1110000

70、0" => IF DISP4 ="11111100" THEN DISP5 <= "10111110" -7-6WHEN "10111110" => IF DISP4 ="11111100" THEN DISP5 <= "10110110" -6-5WHEN "10110110" => IF DISP4 ="11111100" THEN DISP5 <= "01100110" -5-4WHE

71、N "01100110" => IF DISP4 ="11111100" THEN DISP5 <= "11110010" -4-3WHEN "11110010" => IF DISP4 ="11111100" THEN DISP5 <= "11011010" -3-2WHEN "11011010" => IF DISP4 ="11111100" THEN DISP5 <= "01100000" -2-1WHEN "01100000" => IF DISP4 ="11111100" THEN DISP5 <= "11111100" -1-0WHEN OTHERS => DISP5 <= "00000000"END CASE;WHEN OTHERS => DISP5 <= "11111100" DISP4 <= "11111100"END CASE;END IF;END IF;IF (D