标题: C51秒表仿真电路实验 [打印本页]
作者: heicc    时间: 2016-5-29 15:46
标题: C51秒表仿真电路实验





仿真文件下载：http://www.51hei.com/bbs/dpj-50777-1.html

  1. #include <reg51.h>
  2. char disNumber[10] = {0x40, 0x79, 0x24, 0x30, 0x19, 0x12, 0x2, 0x78, 0x0, 0x10};
  3.    char ONE = 0;
  4.   char TWO = 0;
  5.   char THERE = 0;
  6.   char FOUR = 0;
  7.   int count = 0;
  8. void delay5ms(void)   //误差 0us
  9. {
  10.     unsigned char a,b;
  11.     for(b=19;b>0;b--)
  12.         for(a=130;a>0;a--);
  13. }

  15. void delay950ms(void)   //误差 0us
  16. {
  17.     unsigned char a,b,c;
  18.     for(c=227;c>0;c--)
  19.         for(b=246;b>0;b--)
  20.             for(a=7;a>0;a--);
  21. }
  22. void time1() interrupt 1
  23. {
  24. TH0=(65536-50000)/256;
  25. TL0=(65536-50000)%256;
  26. count++;
  27. if (count % 2 == 0)
  28. FOUR++;
  29. if (FOUR >= 10)
  30. {
  31.   FOUR = 0;
  32.   THERE++;
  33. }
  34. if (THERE >= 10)
  35. {
  36.   THERE = 0;
  37.   TWO++;
  38. }
  39. if (TWO >= 10)
  40. {
  41.   TWO = 0;
  42.   ONE++;
  43. }
  44. }

  46. int main(void)
  47. {
  48.   int i = 0;
  49.   
  50.   
  51. TMOD=0x01;//设置定时器0为工作方式1
  52. TH0=(65536-50000)/256;
  53. TL0=(65536-50000)%256;
  54. EA=1;//打开中断总开关
  55. ET0=1;//开定时器0中断
  56. TR0=1;//启动定时器0
  57.   
  58.   while (1)
  59.   {
  60.     P3 = 0;
  61.         P2 = 0X1;
  62.     P0 = disNumber[ONE];
  63.     delay5ms();
  64.        
  65.         P2 = 0X2;
  66.         P0 = disNumber[TWO];
  67.         delay5ms();
  68.         i++;

  70.         P2 = 0X4;
  71.         P0 = disNumber[THERE];
  72.         delay5ms();
  73.         i++;

  75.         P2 = 0X8;
  76.         P0 = disNumber[FOUR];
  77.         delay5ms();
  78.         i++;
  79.         }         
  80.                  
  81.   return 0;
  82. }
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