test.c

单片机用的是AT89C2051

#include <reg51.h>

 unsigned char code dis_code[]={0xf9,0xa4,0xb0,0x99,0x92};	// 1, 2, 3, 4, 5 
 sbit P1_0=P1^0; 
 sbit P1_1=P1^1; 
 sbit P1_2=P1^2; 
 sbit P1_3=P1^3;
 sbit P1_4=P1^4;
 sbit P3_3=P3^3;
 sbit P3_4=P3^4;
 sbit P2_0=P2^0;
unsigned char ID; 
void delay10ms(void) 
{ 
  unsigned char i,j; 
  for(i=20;i>0;i--) 
  for(j=100;j>0;j--); 
} 
void delay02s(void) 
{ 
  unsigned char i; 
  for(i=20;i>0;i--) 
    {delay10ms(); 
    } 
} 

void display(ID) 
{
switch(ID) 
        { case 0: 
		    P1=0xff;
			P1_0=~P1_0;
			P0=dis_code[0];
            delay02s(); 
            break; 
          case 1: 
		    P1=0xff;
            P1_1=~P1_1;
			P0=dis_code[1]; 
            delay02s(); 
            break; 
          case 2:
		    P1=0xff; 
            P1_2=~P1_2;
			P0=dis_code[2];  
            delay02s(); 
            break; 
          case 3:
		    P1=0xff; 
            P1_3=~P1_3; 
			P0=dis_code[3]; 
            delay02s(); 
            break; 
		  case 4:
		    P1=0xff; 
			P0=dis_code[4]; 
            P1_4=~P1_4; 
            delay02s(); 
            break; 
        } 
 }
void main(void) 
{ P2_0=0;

while(1) 
   { 
	
		if(P3_3==0|P3_4==0) 
        {
			delay10ms(); 
          	if(P3_3==0) 
            { 
              ID++; 
              if(ID==5) 
                { 
                  ID=0; 
                } 


              while(P3_3==0) ;
            } 

			 delay10ms(); 
			if(P3_4==0) 
            { 
              
              if(ID==0) 
                { 
                  ID=5; 
                } 
				ID--; 

              while(P3_4==0) ;
            }
						 
         } 
	 	display(ID);
		
		
   	 } 
 }