51实验8：数码管最后三位显示123

#include

typedef unsigned int u16;

typedef unsigned char u8;

sbit LSA=P2^2;

sbit LSB=P2^3;

sbit LSC=P2^4;

void delay(u16 i)

{

  while(i--);

}

u8 code smgduan[16]={0x3f,0x06,0x5b,0x4f,0x66,

0x6d,0x7d,0x07,0x7f,0x6f,

0x77,0x7c,0x39,0x5e,0x79,

0x71};

void DigDisplay()

{

    u8 i;

  for(i=5;i<8;i++)

    {

switch(i)

{

case 0:

       LSA=0;LSB=0;LSC=0;break;

case 1:

       LSA=1;LSB=0;LSC=0;break;

case 2:

       LSA=0;LSB=1;LSC=0;break;

case 3:

       LSA=1;LSB=1;LSC=0;break;

case 4:

       LSA=0;LSB=0;LSC=1;break;

case 5:

       LSA=1;LSB=0;LSC=1;break;

case 6:

       LSA=0;LSB=1;LSC=1;break;

case 7:

       LSA=1;LSB=1;LSC=1;break;

}

P0=smgduan[i-4];

delay(100);

P0=0x00;

}

}

void main()

{

   while(1)

{

   DigDisplay();

}

}