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原本想把這個案子介紹給一個朋友的，也許太忙了，連回個信息的時間都沒有；

沒辦法，就這樣試著寫下去；

這個程序包含三個方面的知識：

1。4*4按鍵的部份--完成（0~9）數(shù)字鍵，功能鍵，字母鍵的輸入；按鍵抬起后才能作用；

2。LCD12232的顯示部份；串行顯示，只用兩根線，顯示中英文字母及數(shù)字；

3。TTL系列芯片與CMOS系列芯片的知識，及做庫；這部份還沒完成；

我想第三步完成了，MM還符合一名合格的大學(xué)畢業(yè)生的；

哈！直接上代碼了,下載地址：http://www.torrancerestoration.com/f/12232ch.rar

#include <reg52.h>

#define uint unsigned int
#define uchar unsigned char

sbit SID = P0^5 ;
sbit SCK = P0^6 ;
sbit BUZ = P0^7;

sbit A0 = P3^0;
sbit A1 = P3^1;
sbit A2 = P3^2;
sbit A3 = P3^3;
sbit A4 = P3^4;
sbit A5 = P3^5;

sbit B0 = P0^0;
sbit B7 = P1^7;
sbit B6 = P1^6;
sbit B5 = P1^5;
sbit B4 = P1^4;
sbit B3 = P1^3;
sbit B2 = P1^2;

uchar Key_Select,Key_Mode;

uchar code Disp_1[]={"浙江師范大學(xué)行"};
uchar code Disp_2[]={"知學(xué)院電子信息"};
uchar code Disp_3[]={"工程08級毛夢超"};
uchar code Disp_4[]={"的畢業(yè)設(shè)計(jì)--集"};
uchar code Disp_5[]={"成電路測試系統(tǒng)！"};
uchar code Disp_6[]={"指導(dǎo)老師：丁宇"};

uchar code Disp_7[]={"請插入芯片后按"};
uchar code Disp_8[]={"確認(rèn)鍵進(jìn)行測試！"};
uchar code Disp_9[]={"請選擇芯片類型："};
uchar code Disp_10[]={"1-CMOS; 2-TTL;"};
uchar code Disp_11[]={"請輸入CMOS系列"};
uchar code Disp_12[]={"請輸入TTL 系列"};
uchar code Disp_13[]={"IC型號："};

//-----------------Delay_*2us-------------------
void Delay_us(uchar x2us)
{
while(--x2us);
}

void Delay_ms(uint xms)
{
   uint i,j;
   for(i=xms;i>0;i--)
   for(j=122;j>0;j--)
   {}
}
//-------------4KHz-------------------
void Buz(void)
{
  uint i;
  for(i=200;i>0;i--)
  {
   BUZ=1;
   Delay_us(120);
   BUZ=0;
  }
  BUZ=0;
}
//-------------LCD Part--------------------
//LCD顯示部份之寫地址
//-----------------------------------------
void Lcd_Wr_Command(uchar com_data)
{
  uchar i;
  uchar i_data;
  i_data=0xf8;
  SCK=0;
  for(i=0;i<8;i++)
  {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
  }
  i_data=com_data;
  i_data&=0xf0;
  for(i=0;i<8;i++)
  {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
  }
   i_data=com_data;
   i_data<<=4;
   for(i=0;i<8;i++)
   {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
   }
   Delay_ms(1);
}
//-------------LCD Part--------------------
//LCD顯示部份之寫數(shù)據(jù)
//-----------------------------------------
void Lcd_Wr_Data(uchar com_data)
{
  uchar i;
  uchar i_data;
  i_data=0xfa;

  for(i=0;i<8;i++)
  {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
  }
  i_data=com_data;
  i_data&=0xf0;
  for(i=0;i<8;i++)
  {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
  }
   i_data=com_data;
   i_data<<=4;
   for(i=0;i<8;i++)
   {
   SID=(bit)(i_data&0x80);
   SCK=0;
   SCK=1;
   i_data=i_data<<1;
   }
   Delay_ms(1);
}
//-------------LCD Part--------------------
//LCD顯示部份之初始化
//-----------------------------------------
void Lcd_init()
{
  Delay_ms(100);
  Lcd_Wr_Command(0x30);
  Delay_ms(5);
  Lcd_Wr_Command(0x02);
  Delay_ms(5);
  Lcd_Wr_Command(0x06);
  Delay_ms(5);
  Lcd_Wr_Command(0x0c);
  Delay_ms(5);
  Lcd_Wr_Command(0x01);
  Delay_ms(5);
  //Lcd_Wr_Command(0x80);
}
void Posit(uchar x,uchar y,uchar *String)
{
  uchar Posit,Addr;
  if(y==1)
  Addr=0x80;
  if(y==2)
  Addr=0x90;

  Posit=Addr+x;
  Lcd_Wr_Command(Posit);
  while(*String!='\0')
  {
   Lcd_Wr_Data(*String++);
   Delay_ms(250);
  }

}
//-------------------------------------------------
//4*4鍵盤掃描部份；按鍵釋放后才返回鍵值
//------------------Key_Scan-----------------------
uchar s_scan(void)
{

  P2=0xf0;
  if((P2&0xf0)!=0xf0)
  {
   P2=0xf0;
   Delay_ms(30);
   if((P2&0xf0)!=0xf0)
   {
     P2=0xfe ; //第一列開始，逐行掃描
    if((P2&0xf0)!=0xf0)
    {
     P2&=0xf0;
     if(P2==0xe0)
     {Buz();while(!(P2==0xf0));return(16);}    //取消鍵
     if(P2==0xd0)
     {Buz();while(!(P2==0xf0));return(15);}    //確認(rèn)鍵`
     if(P2==0xb0)
     {Buz();while(!(P2==0xf0));return(14);}    //選擇鍵
     if(P2==0x70)
     {Buz();while(!(P2==0xf0));return(13);}    //測試鍵
    }
     P2=0xfd; //第二列開始，逐行掃描
    if((P2&0xf0)!=0xf0)
    {
     P2&=0xf0;
     if(P2==0xe0)
     {Buz();while(!(P2==0xf0));return(12);}    //“LS”字母輸入鍵
     if(P2==0xd0)
     {Buz();while(!(P2==0xf0));return(11);}    //“CD”字母輸入鍵
     if(P2==0xb0)
     {Buz();while(!(P2==0xf0));return(10);}    //“0”鍵
     if(P2==0x70)
     {Buz();while(!(P2==0xf0));return(9);}    //“9”鍵
    }
     P2=0xfb;    //第三列開始，逐行掃描
    if((P2&0xf0)!=0xf0)
    {
     P2&=0xf0;
     if(P2==0xe0)
     {Buz();while(!(P2==0xf0));return(8);}   //“8”鍵
     if(P2==0xd0)
     {Buz();while(!(P2==0xf0));return(7);}   //“7”鍵
     if(P2==0xb0)
     {Buz();while(!(P2==0xf0));return(6);}   //“6”鍵
     if(P2==0x70)
     {Buz();while(!(P2==0xf0));return(5);}   //“5”鍵
    }
     P2=0xf7; //第四列開始，逐行掃描
    if((P2&0xf0)!=0xf0)
    {
     P2&=0xf0;
     if(P2==0xe0)
     {Buz();while(!(P2==0xf0));return(4);} //“4”鍵
     if(P2==0xd0)
     {Buz();while(!(P2==0xf0));return(3);} //“3”鍵
     if(P2==0xb0)
     {Buz();while(!(P2==0xf0));return(2);} //“2”鍵
     if(P2==0x70)
     {Buz();while(!(P2==0xf0));return(1);} //“1”鍵
    }
   }
  }
  return 0;
}
//------------------main part-----------------
//主函數(shù)部份
//-----------------------------------------
void main()
{
  uchar key_code;
  Lcd_init();
//-------------------------------
//浙江師范大學(xué)行知學(xué)院電子信息
//-------------------------------
  Posit(0,1,Disp_1);
  Posit(0,2,Disp_2);
  Delay_ms(1000);
  Lcd_Wr_Command(0x01);
  Delay_ms(5);
  Lcd_Wr_Command(0x02);
  Delay_ms(5);
//-------------------------------
//工程08級毛夢超的畢業(yè)設(shè)計(jì)-集
//-------------------------------
  Posit(0,1,Disp_3);
  Posit(0,2,Disp_4);
  Delay_ms(1000);
//-------------------------------
  Lcd_Wr_Command(0x01);
  Delay_ms(5);
  Lcd_Wr_Command(0x02);
  Delay_ms(5);
//-------------------------------
//成電路測試系統(tǒng)！指導(dǎo)老師：丁宇
//-------------------------------
  Posit(0,1,Disp_5);
  Posit(0,2,Disp_6);
  Delay_ms(5000);
//-------------------------------
  Lcd_Wr_Command(0x01);
  Delay_ms(5);
  Lcd_Wr_Command(0x02);
  Delay_ms(5);
//-------------------------------
//請插入芯片后按確認(rèn)進(jìn)行測試！
//-------------------------------
  Posit(0,1,Disp_7);
  Posit(0,2,Disp_8);
  Delay_ms(100);

  while(1)
  {
   key_code=s_scan();
//------------------------------------------------------
//鍵值處理程序，包含數(shù)字輸入鍵和字母輸入鍵以及功能鍵操作
//------------------------------------------------------
   switch(key_code)
   {
    case 1:
      {
       Lcd_Wr_Data('1');
       Delay_ms(300);
      }break;
    case 2:
      {
       Lcd_Wr_Data('2');
       Delay_ms(300);
      }break;
    case 3:
      {
       Lcd_Wr_Data('3');
         Delay_ms(300);
      }break;
    case 4:
      {
       Lcd_Wr_Data('4');
       Delay_ms(300);
      }break;
    case 5:
      {
       Lcd_Wr_Data('5');
       Delay_ms(300);
      }break;
    case 6:
      {
       Lcd_Wr_Data('6');
       Delay_ms(300);
      }break;
    case 7:
      {
       Lcd_Wr_Data('7');
       Delay_ms(300);
      }break;
    case 8:
      {
       Lcd_Wr_Data('8');
       Delay_ms(300);
      }break;
    case 9:
      {
       Lcd_Wr_Data('9');
       Delay_ms(300);
      }break;
    case 10:
      {
       Lcd_Wr_Data('0');
       Delay_ms(300);
      }break;
    case 11:
      {
       Posit(5,2,"CD");
       Delay_ms(300);

      }break;
    case 12:
      {
       Posit(5,2,"LS");
       Delay_ms(300);
      }break;

    case 13:
      {
       P3=0x00;
       if(Key_Select==1) //CMOS芯片型號CD4053
       {

       }
       if(Key_Select==2) //TTL 芯片型號74LS00
       {
         P3=0x00;
        P1=0x00;
        B4=0x00;

        B6=0;B7=0;
        B3=0;B4=0;

         if((A0&0x01)&&(A3&0x01)&&(B0&0x01)&&(B5&0x01))
         {
         Buz();
         Buz();Delay_ms(500);
         Lcd_Wr_Command(0x01);
         Posit(0,1,"測試結(jié)果：");
         Posit(4,2,"OK！");
         Buz();Delay_ms(100);
         Buz();Delay_ms(300);
         Buz();Delay_ms(500);
         Buz();Delay_ms(800);
         Buz();Delay_ms(1000);
         Buz();Delay_ms(800);
         Buz();Delay_ms(500);
         Buz();Delay_ms(300);
         Buz();Delay_ms(100);
        }
        else
        {
         Buz();
         Lcd_Wr_Command(0x01);
         Posit(0,1,"測試結(jié)果：");
         Posit(4,2,"FAIL！");
         while(Key_Select)
         {
          Buz();
         }
        }
       }
       Delay_ms(300);
      } break;

    case 14: //選擇鍵
      {
       Key_Select++;
       if(Key_Select==1)
       {
        Lcd_Wr_Command(0x0f);
        Lcd_Wr_Command(0x90);
       }
       if(Key_Select==2)
       {
        Lcd_Wr_Command(0x0f);
        Lcd_Wr_Command(0x94);
       }
       if(Key_Select==3)
       {
        Lcd_Wr_Command(0x0c);
        Key_Select=0;
       }
       Delay_ms(300);
      }break;
    case 15: //確認(rèn)鍵
      {
       Key_Mode++;
       if(Key_Mode==3)
       {
        Key_Mode=0;
        Key_Select=0;
        Lcd_Wr_Command(0x0c);
        Lcd_Wr_Command(0x01);
        Lcd_Wr_Command(0x02);
        Posit(0,1,Disp_7);
        Posit(0,2,Disp_8);
       }
       if(Key_Mode==1)
       {
        Lcd_Wr_Command(0x01);
        Posit(0,1,Disp_9);
        Posit(0,2,Disp_10);
       }
       if(Key_Mode==2)
       {
         if(Key_Select==1)
         {
         Lcd_Wr_Command(0x01);
        Lcd_Wr_Command(0x02);
         Posit(0,1,Disp_11);
        Posit(0,2,Disp_13);
        //Lcd_Wr_Command(0x95);
         }
         if(Key_Select==2)
          {
         Lcd_Wr_Command(0x01);
        Lcd_Wr_Command(0x02);
         Posit(0,1,Disp_12);
        Posit(0,2,Disp_13);
        //Lcd_Wr_Command(0x95);
         }
       }
       Delay_ms(300);
      }break;
    case 16: //取消鍵
      {
       if(Key_Select==1)
       {
        Lcd_Wr_Command(0x0c);
        Lcd_Wr_Command(0x01);
        Lcd_Wr_Command(0x02);
        Lcd_Wr_Command(0x0f);
        Posit(0,1,Disp_11);
        Posit(0,2,Disp_13);
        //Lcd_Wr_Command(0x95);
       }
       if(Key_Select==2)
       {
        Lcd_Wr_Command(0x0c);
        Lcd_Wr_Command(0x01);
        Lcd_Wr_Command(0x02);
        Lcd_Wr_Command(0x0f);
        Posit(0,1,Disp_12);
        Posit(0,2,Disp_13);
        //Lcd_Wr_Command(0x95);
       }
       Delay_ms(300);
      }break;

default:P0=0xff;
}
}
}

LCD12232串行顯示C51程序

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