float numb ;
char digit ;
char xdata mas [ 8 ] ;
char m = 1;
void Int00 ( void ) interrupt0
{
	char x = P3 ;
	switch ( x )
	{
		case 0x77 :
			digit = '1';
			break;
		case 0x73 :
			digit = '2';
			break;
		case 0x71 :
			digit = '3';
			break;
		case 0x70 :
			digit = '4';
			break;
		case 0xb7 :
			digit = '5';
			break;
		case 0xb3 :
			digit = '6';
			break;
		case 0xd1 :
			digit = '7';
			break;
		case 0xd0 :
			digit = '8';
			break;
		case 0xd7 :
			digit = '9';
			break;
		case 0xd1 :
			digit = '0';
			break;
		case 0xd3 :
			digit = ',';
			break;
		case 0xd0 :
			digit = 'e';
			break;
		default : digit = 0xff;
	}

	if ( digit == ’,’ )
	{
		mm=m;
		mas [ i++] = digit ;
		digit  = 0xff ;
	}
	if ( digit  == ’e’ )
	{
		digit = 0xff ;
		numb /= mm;
	}
	if ( digit != 0xff )
	{
		mas [ i++] = digit ;
		m ∗= 10;
		numb = numb∗10 + ( digit&0x0f ) ; // −> 10/2
	}
	While ( ~int0 ) ;
}
main ( )
{
	EX0=1;
	IT0=1;
	EA=1;
	while ( 1 ) ;
}