2.lst

C51 程序练习

C51 COMPILER V7.06   2                                                                     11/08/2011 18:39:02 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE 2
OBJECT MODULE PLACED IN 2.OBJ
COMPILER INVOKED BY: E:\KEIL\C51\BIN\C51.EXE 2.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          //用动态扫描方法和定时器1在数码管的前三位显示出秒表，精确到1%秒，即后两位显示1%秒，一直循环下去
   2          
   3          #include<reg52.h> 
   4          #define uint unsigned int   
   5          #define uchar unsigned char 
   6          uchar ge,shi,bai,wela,dula;
   7          //P0位选 P1断选
   8          uint tt;
   9          uchar code table[]={
  10          0x3f,0x06,0x5b,0x4f,
  11          0x66,0x6d,0x7d,0x07,
  12          0x7f,0x6f,0x77,0x7c,
  13          0x39,0x5e,0x79,0x71};
  14          void display(uchar,uchar,uchar); //函数声明
  15          void delay(uint);
  16          void main()
  17          {
  18   1              TMOD=0x10;//设置定时器1为工作方式1
  19   1              TH1=(65536-10000)/256;
  20   1              TL1=(65536-10000)%256;
  21   1              EA=1;//开总中断
  22   1              ET1=1;//开定时器1中断
  23   1              TR1=1;//启动定时器1
  24   1              while(1)
  25   1              {
  26   2                      display(bai,shi,ge);
  27   2              }
  28   1      }
  29          
  30          
  31          void exter0() interrupt 3   // 定时器1中断
  32          {
  33   1              TH1=(65536-10000)/256;
  34   1              TL1=(65536-10000)%256;
  35   1              tt++;
  36   1              if(tt==1000)
  37   1                      tt=0;
  38   1              bai=tt/100;
  39   1              shi=tt%100/10;
  40   1              ge=tt%10;
  41   1      }
  42          
  43          void display(uchar one,uchar two,uchar three)
  44          {
  45   1      
  46   1                      P1=table[one];   //送段数据
  47   1                      P0=0xfe;
  48   1                      delay(5);
  49   1      
  50   1      
  51   1                      P1=table[two];
  52   1                      P0=0xfd;
  53   1                      delay(5);
  54   1      
  55   1      
C51 COMPILER V7.06   2                                                                     11/08/2011 18:39:02 PAGE 2   

  56   1                      P1=table[three];
  57   1                      P0=0xfb;
  58   1                      delay(5);
  59   1      }
  60          
  61          void delay(uint z)       //延时子函数
  62          {
  63   1              uint x,y;
  64   1              for(x=z;x>0;x--)
  65   1                      for(y=110;y>0;y--);
  66   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    229    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      7       2
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)