准时钟.lst

本文件包含了使用C语言编写单片机的各种入门程序

C51 COMPILER V8.02   准时钟                                                                10/20/2008 17:02:24 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 准时钟
OBJECT MODULE PLACED IN 准时钟.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 准时钟.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          sbit sda=P0^2;
   3          sbit scl=P0^3;
   4          unsigned int b,second,minute,hour;
   5          code int led[10]={0x11,0xd7,
   6          0x32,0x92,0xd4,0x98,0x18,
   7          0xd3,0x10,0x90};
   8          void delay(int t)
   9          {
  10   1      int u;
  11   1      for(;t>0;t--)
  12   1      for(u=0;u<400;u++);
  13   1      }
  14          shift(int k)
  15          {
  16   1      int j,led1=led[k];
  17   1      for(j=0;j<8;j++)
  18   1      {
  19   2      scl=0;
  20   2      if(led1&0x80)sda=1;
  21   2      else sda=0;
  22   2      scl=1;
  23   2      scl=0;
  24   2      //sda=0;
  25   2      led1=led1<<1;
  26   2      }
  27   1      }
  28          display()
  29          {
  30   1      b=second%10;
  31   1      shift(b);
  32   1      b=second/10;
  33   1      shift(b);
  34   1      shift(0xff);
  35   1      b=minute%10;
  36   1      shift(b);
  37   1      b=minute/10;
  38   1      shift(b);
  39   1      shift(0xff);
  40   1      b=hour%10;
  41   1      shift(b);
  42   1      b=hour/10;
  43   1      shift(b);
  44   1      }
  45          void main()
  46          {
  47   1      for(hour=0;hour<24;hour++)
  48   1      {
  49   2      for(minute=0;minute<60;minute++)
  50   2      {
  51   3      for(second=0;second<60;second++)
  52   3      {
  53   4      display();
  54   4      delay(400);
  55   4      }
C51 COMPILER V8.02   准时钟                                                                10/20/2008 17:02:24 PAGE 2   

  56   3      }
  57   2      }
  58   1      
  59   1      
  60   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    276    ----
   CONSTANT SIZE    =     20    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      8    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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