#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit h1=P2^0;
sbit h2=P2^1;

sbit l1=P2^2;
sbit l2=P2^3;


//======================================================================
//延時子程序//
//======================================================================
void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}

void display1()
{
	
		h1=0;
		h2=0;
		l1=0;
		l2=0;

		

		h1=1;
		P0=0xfe;
		h1=0;
		

		h2=1;
		P0=0xff;
		h2=0;


		l1=1;
		P0=0x01;
		l1=0;
		
		l2=1;
		P0=0x00;
		l2=0;

		
}

void display2()
{	
		h1=0;
		h2=0;
		l1=0;
		l2=0;

		

		h1=1;
		h2=1;
		P0=0x00;
		h1=0;
		h2=0;
		
		delay(200);

		l1=1;
		l2=1;
		P0=0xff;
		l1=0;
		l2=0;

		delay(200);


}
void main()
{
	
	//display1();
	while(1)
	{	
		display2();
	}
}




/*
		h1=1;
		h2=1;
		P0=0x00;
		h1=0;
		h2=0;

		
		l1=1;
		l2=1;
		P0=0xff;	
		l1=0;
		l2=0;

		delay(500);

		l1=1;
		l2=1;
		P0=0x00;	
		l1=0;
		l2=0;
		delay(500);//閃動



*/