1.c

利用stc12c4052AD单片机

#include "STC12C4052AD.h"
BYTE NumTable[10] = {0x03,0x3F,0x4A,0x2A,0x36,0xA2,0x82,0x3B,0x02,0x22};
BYTE c;


void ini_time0() 
	{ 
	  TMOD=0X01;
	  TH0=0X3C;
	  TL0=0XB0;
	  ET0=1;
	  EA=1;
	  TR0=1;
	}
 
void time0() interrupt 1
   {  
   TH0=0X3C;
   TL0=0XB0;
  
    {
	  			
				c++;
				if(c==20)
				{
				  
				    P3_7=0;
					P3_5=1;
					P1= NumTable[1];
					
				}		
			     if(c==40) 	
					
					 {  
					   
					   P3_7=0;
					   P3_5=1;
					   P1= NumTable[2];
					  
					 }
				    if(c==60) 	
					
					 {  
					   c=0;
					   P3_7=0;
					   P3_5=0;
					    
				 
				  
			     }
				


     }
   }	  

  void main(void)
  {
	   	ini_time0();
		P1M0 = 0x00;  //0 1 2 3  4 5 6 7 output
		P1M1 = 0xFF;  //  
		P3M0 = 0x00;   //0101 1111
		P3M1 = 0xFF;   //1010 0000ini_time0();
	   	c=0;
	

	   while(1);
   }