C51 COMPILER V8.02   JVZHENJIANPAN                                                         06/22/2010 11:26:31 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE JVZHENJIANPAN
OBJECT MODULE PLACED IN jvzhenjianpan.OBJ
COMPILER INVOKED BY: D:\处理软件\keil\C51\BIN\C51.EXE jvzhenjianpan.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //4*4键盘检测程序,按下键后相应的代码显示在数码管上
   2          #include<reg51.h>
   3          sbit beep=P2^3;
   4          sbit dula=P2^6;
   5          sbit wela=P2^7;
   6                   unsigned char i=100;
   7          unsigned char j,k,temp,key;
   8          void delay(unsigned char i)
   9          {
  10   1        for(j=i;j>0;j--)
  11   1          for(k=125;k>0;k--);
  12   1      }
  13          unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
  14                                  0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
  15          display(unsigned char num)
  16          {
  17   1               P0=table[num];
  18   1               dula=1;
  19   1               dula=0;
  20   1               P0=0xc0;
  21   1               wela=1;
  22   1               wela=0;
  23   1      }
  24          void main()
  25          {
  26   1        dula=0;
  27   1        wela=0;
  28   1        while(1)
  29   1        {
  30   2          P3=0xfe;
  31   2          temp=P3;
  32   2          temp=temp&0xf0;
  33   2          if(temp!=0xf0)
  34   2          {
  35   3            delay(10);
  36   3            if(temp!=0xf0)
  37   3            {
  38   4              temp=P3;
  39   4              switch(temp)
  40   4              {
  41   5                case 0xee:
  42   5                     key=0;
  43   5                     break;
  44   5      
  45   5                case 0xde:
  46   5                     key=1;
  47   5                     break;
  48   5      
  49   5                case 0xbe:
  50   5                     key=2;
  51   5                     break;
  52   5      
  53   5                case 0x7e:
  54   5                     key=3;
  55   5                     break;
C51 COMPILER V8.02   JVZHENJIANPAN                                                         06/22/2010 11:26:31 PAGE 2   

  56   5               }
  57   4               while(temp!=0xf0)
  58   4               {
  59   5                 temp=P3;
  60   5                 temp=temp&0xf0;
  61   5                 beep=0;
  62   5               }
  63   4               beep=1;
  64   4              display(key);
  65   4               P1=0xfe;
  66   4            }
  67   3          }
  68   2          P3=0xfd;
  69   2          temp=P3;
  70   2          temp=temp&0xf0;
  71   2          if(temp!=0xf0)
  72   2          {
  73   3            delay(10);
  74   3            if(temp!=0xf0)
  75   3            {
  76   4              temp=P3;
  77   4              switch(temp)
  78   4              {
  79   5                case 0xed:
  80   5                     key=4;
  81   5                     break;
  82   5      
  83   5                case 0xdd:
  84   5                     key=5;
  85   5                     break;
  86   5      
  87   5                case 0xbd:
  88   5                     key=6;
  89   5                     break;
  90   5      
  91   5                case 0x7d:
  92   5                     key=7;
  93   5                     break;
  94   5               }
  95   4               while(temp!=0xf0)
  96   4               {
  97   5                 temp=P3;
  98   5                 temp=temp&0xf0;
  99   5                 beep=0;
 100   5               }
 101   4               beep=1;
 102   4               display(key);
 103   4            }
 104   3            }
 105   2          P3=0xfb;
 106   2          temp=P3;
 107   2          temp=temp&0xf0;
 108   2          if(temp!=0xf0)
 109   2          {
 110   3            delay(10);
 111   3            if(temp!=0xf0)
 112   3            {
 113   4              temp=P3;
 114   4              switch(temp)
 115   4              {
 116   5                case 0xeb:
 117   5                     key=8;
C51 COMPILER V8.02   JVZHENJIANPAN                                                         06/22/2010 11:26:31 PAGE 3   

 118   5                     break;
 119   5      
 120   5                case 0xdb:
 121   5                     key=9;
 122   5                     break;
 123   5      
 124   5                case 0xbb:
 125   5                     key=10;
 126   5                     break;
 127   5      
 128   5                case 0x7b:
 129   5                     key=11;
 130   5                     break;
 131   5               }
 132   4               while(temp!=0xf0)
 133   4               {
 134   5                 temp=P3;
 135   5                 temp=temp&0xf0;
 136   5                 beep=0;
 137   5               }
 138   4               beep=1;
 139   4              display(key);
 140   4            }
 141   3            }
 142   2          P3=0xf7;
 143   2          temp=P3;
 144   2          temp=temp&0xf0;
 145   2          if(temp!=0xf0)
 146   2          {
 147   3            delay(10);
 148   3            if(temp!=0xf0)
 149   3            {
 150   4              temp=P3;
 151   4              switch(temp)
 152   4              {
 153   5                case 0xe7:
 154   5                     key=12;
 155   5                     break;
 156   5      
 157   5                case 0xd7:
 158   5                     key=13;
 159   5                     break;
 160   5      
 161   5                case 0xb7:
 162   5                     key=14;
 163   5                     break;
 164   5      
 165   5                case 0x77:
 166   5                     key=15;
 167   5                     break;
 168   5               }
 169   4               while(temp!=0xf0)
 170   4               {
 171   5                 temp=P3;
 172   5                 temp=temp&0xf0;
 173   5                 beep=0;
 174   5               }
 175   4               beep=1;
 176   4              display(key);
 177   4            }
 178   3          }
 179   2        }
C51 COMPILER V8.02   JVZHENJIANPAN                                                         06/22/2010 11:26:31 PAGE 4   

 180   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    395    ----
   CONSTANT SIZE    =     16    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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