八路抢答器仿真图与单片机程序

希望能帮到你,八路抢答器仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）


单片机源程序如下:

1. #include<reg51.h>
   
2. #define uchar unsigned char
   
3. #define uint unsigned int
   
4. sbit m1=P3^1;
   
5. sbit m2=P3^2;
   
6. sbit k1=P1^0;
   
7. sbit k2=P1^1;
   
8. sbit k3=P1^2;
   
9. sbit k4=P1^3;
   
10. sbit k5=P1^4;
    
11. sbit k6=P1^5;
    
12. sbit k7=P1^6;
    
13. sbit k8=P1^7;
    
14. sbit k=P3^0;
    
15. sbit beep=P3^7;
    
16. uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77};
    
17. uchar shiwei,gewei,xuanshou,count,i,second;
    
18. uchar score1,score2,score3,score4,score5,score6,score7,score8;
    
19. uint t,m,n,a,a1,a2,a3,a4,a5,a6,a7,a8;
    
20. void Timer()
    
21. {
    
22. TMOD=0X01;
    
23. TH0=0XD8;
    
24. TL0=0Xf0;
    
25. IE=0X82;
    
26. TR0=1;
    
27. }
    
28. void tim(void) interrupt 1
    
29. {TH0=0xd8;
    
30. TL0=0xf0;
    
31. count++;
    
32. if(count==100)
    
33. {  count=0;
    
34.    second--;}
    
35. }
    
36. void delay(uint z)
    
37. {   uint x,y;
    
38. for(x=z;x>0;x--)
    
39. for(y=110;y>0;y--); }
    
40. void display (uchar shiwei,gewei,xuanshou)
    
41.   { P2=0xfe;
    
42.   P0=shiwei;
    
43.   delay(5);
    
44.   P2=0xfd;
    
45.   P0=gewei;
    
46. delay(5);
    
47. P2=0xf7;   
    
48.   P0=xuanshou;
    
49. delay(5);
    
50. }
    
51. void dis(void)
    
52. {shiwei=tab[second/10];
    
53. gewei=tab[second%10];
    
54. xuanshou=tab[i];
    
55. display(shiwei,gewei,xuanshou);
    
56. }
    
57. void init()
    
58. { P2=0x04;
    
59. P0=0x3f;
    
60. t=0;
    
61. beep=0;
    
62. i=0;
    
63. second=29;
    
64. score1=60;
    
65. score2=60;
    
66. score3=60;
    
67. score4=60;
    
68. score5=60;
    
69. score6=60;
    
70. score7=60;
    
71. score8=60;
    
72. a1=1;
    
73. a2=1;
    
74. a3=1;
    
75. a4=1;
    
76. a5=1;
    
77. a6=1;
    
78. a7=1;
    
79. a8=1;
    
80. }
    
81. void main()
    
82. {  init();
    
83. if(k==0)
    
84. {  Timer();
    
85. delay(10);
    
86. while(!k);
    
87. while(1)
    
88. { dis();
    
89. m=0;
    
90. n=0;}
    
91. if(second==10){beep=1;delay(500);beep=0;}
    
92. if(second==0){TR0=0;n=1;
    
93.       if(k==0)
    
94. {beep=1;delay(500);beep=0;second=29;TR0=1;m=1;}
    
95. } }
    
96.   if(n==0)
    
97. { if(k1==0) {delay(5);if(k1==0);while(!k1);t=1;}
    
98. else if(k2==0){delay(5);if(k2==0);while(!k2);t=2;}
    
99. else if(k3==0){delay(5);if(k3==0);while(!k2);t=3;}
    
100. else if(k4==0){delay(5);if(k4==0);while(!k2);t=4;}
     
101. else if(k5==0){delay(5);if(k5==0);while(!k2);t=5;}
     
102. else if(k6==0){delay(5);if(k6==0);while(!k2);t=6;}
     
103. else if(k7==0){delay(5);if(k7==0);while(!k2);t=7;}
     
104. else if(k8==0){delay(5);if(k8==0);while(!k2);t=8;}
     
105. else if(k==0)
     
106. {delay(5);if(k==0);while(!k);t=0;i=0;second=29;beep=1;delay(500);beep=0;TR0=1;}
     
107. }
     
108. while(t)
     
109. {  if(m==0)
     
110. {  switch(t)
     
111.    {  case 1:
     
112.          {  TR0=0;i=1;second=0;beep=1;delay(500);beep=0;
     
113.             a1=0;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break;
     
114.           }
     
115.       case 2:
     
116.          {  TR0=0;i=2;second=0;beep=1;delay(500);beep=0;
     
117.             a2=0;a1=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break;
     
118.           }
     
119.       case 3:
     
120.           {  TR0=0;i=3;second=0;beep=1;delay(500);beep=0;
     
121.             a3=0;a1=1;a2=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break;
     
122.            }
     
123.       case 4:
     
124.          
     
125.            {  TR0=0;i=4;second=0;beep=1;delay(500);beep=0;
     
126.             a4=0;a1=1;a2=1;a3=1;a5=1;a6=1;a7=1;a8=1;m=1;break;
     
127.           }
     
128.       case 5:
     
129.            {  TR0=0;i=5;second=0;beep=1;delay(500);beep=0;
     
130.             a5=0;a1=1;a2=1;a3=1;a4=1;a6=1;a7=1;a8=1;m=1;break;
     
131.            }
     
132.       case 6:
     
133.            {   TR0=0;i=6;second=0;beep=1;delay(500);beep=0;
     
134.             a6=0;a1=1;a2=1;a3=1;a4=1;a5=1;a7=1;a8=1;m=1;break;
     
135.             }
     
136.        case 7:
     
137.             {  TR0=0;i=7;second=0;beep=1;delay(500);beep=0;
     
138.            a7=0;a1=1;a2=1;a3=1;a4=1;a5=1;a6=1;a8=1;m=1;break;
     
139.             }
     
140.       case 8:
     
141.             {  TR0=0;i=8;second=0;beep=1;delay(500);beep=0;
     
142.            a8=0;a1=1;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;m=1;break;
     
143.    }
     
144. }
     
145. }
     
146. if(a1==0)
     
147. {second=score1;
     
148.    dis();
     
149.       if(m1==0)
     
150. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score1+=1;if(score1==99)score1=60;}
     
151.         else      if(m2==0)
     
152. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score1-=1;if(score1==0)score1=60;
     
153. }
     
154. dis();
     
155. }
     
156.     else if(a2==0)
     
157.   {    second=score2;
     
158. dis();
     
159. if(m1==0)
     
160. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score2+=1;if(score2==99)score2=60;}
     
161. else if(m2==0)
     
162. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score2-=1;if(score2==0)score2=60;}
     
163. dis();
     
164. }
     
165. else if(a3==0)
     
166. {second=score3;
     
167. dis();
     
168. if(m1==0)
     
169. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score3+=1;if(score3==99)score3=60;}
     
170.                 else if(m2==0)
     
171. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score3-=1;if(score3==0)score3=60;}
     
172. dis();
     
173. }
     
174. else if(a4==0)
     
175. {  second=score4;
     
176. dis();
     
177. if(m1==0)
     
178. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score4+=1;if(score4==99)score4=60;}
     
179. else if(m2==0)
     
180. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score4-=1;if(score4==0)score4=60;}
     
181. dis();
     
182. }
     
183. else if(a5==0)
     
184. {second=score5;
     
185. dis();
     
186. if(m1==0)
     
187. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score5+=1;if(score5==99)score5=60;}
     
188. else if(m2==0)
     
189. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score5-=1;if(score5==0)score5=60;}
     
190. second=score5;
     
191. dis();
     
192. }
     
193. else if(a6==0)
     
194. {second=score6;
     
195. dis();
     
196. if(m1==0)
     
197. {delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score6+=1;if(score6==99)score6=60;}
     
198. else if(m2==0)
     
199. {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score5-=1;if(score5==0)score5=60;}
     
200. second=score6;
     
201. dis();
     
202. }
     
203. ……………………
     
204. 
     
205. …………限于本文篇幅 余下代码请从51黑下载附件…………
     

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