shumaguan03.c

共阴四位数码管的显示程序

#include<absacc.h>
#include<reg51.h>

#define uchar unsigned char
#define uint  unsigned int

void ledxianshi(uint tvdata ) ;
void delay(void) ;
void init(void);
sbit SSR=P2^5;


uchar data  led[4];
bit flag;
//uint data  tvdata;    

uchar code  tv[]={0xfe,0xfd,0xfb,0xf7};
uchar code  a[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};//0->9
                     


void delay(void)                      //延时程序
{
  uint i;
  for(i=0;i<1000;i++);
}


void ledxianshi(uint tvdata )       //显示模块
{
  uchar k,i;
  led[0]=tvdata%10;
  led[1]=tvdata/10%10;
  led[2]=tvdata/100%10;
  led[3]=tvdata/1000;
		
  for(k=0;k<4;k++)
  { 
   P2=tv[k];
   i=led[k];
   P1=a[i];
   delay();
  }
} 
void ssr(flag)
{
  if(flag)
  SSR=1;
  else SSR=0;
}
void init(void)
{
  SSR=0;
  flag=0;

}




void main(void)
{
  uint i;
  init();
  delay();
  delay();
  delay();
 
   
  for(i=0;i<10000;i++)
  {
  
  
  ledxianshi(i);
  delay();
  delay();
    
  
   //i++;
   
   }
}     
    
	
 /*void timer0 () interrupt 1
  {
   
   //ALE=~ALE;
 }*/