switch(Channel)
   {
          case 0:
	     ADCF=1;
	     break;
	  case 1:
	     ADCF=2;
	     break;
	  case 2:
	     ADCF=4;
	     break;
	  case 3:
	     ADCF=8;
	     break;
	  case 4:
	     ADCF=16;
	     break;
	  case 5:
	     ADCF=32;
	     break;
	  case 6:
	     ADCF=64;
	     break;
	  case 7:
	     ADCF=128;
	     break;
   }