数码管动态显示

源程序：

#include

sbit SH_CP=P2^4;

sbit ST_CP=P2^3;

sbit DS=P2^2;

unsigned char code
duan[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

unsigned char code
wei[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

void out595();

void delay(int x);

void send595(unsigned char dat);

void out595()

{

  ST_CP=0;

  ST_CP=1;

}

void send595(unsigned char dat)

{

  int i;

  for(i=0;i<8;i++)

  {

   
if((dat<<i)&0x80)

     
DS=1;

    else

     
DS=0;

   
SH_CP=0;

   
SH_CP=1;

  }

}

void main()

{

  int i;

  while(1)

  {

   
for(i=0;i<8;i++)

 {

   send595(wei[i]);

   send595(wei[i]);

   out595();

   send595(duan[i]);

   out595();

   delay(1000);

 }

  }

}

void delay(int x)

{

  int i,j;

  for(i=0;i

   
for(j=0;j<120;j++);

}