N0N7:
	PUSH ACC
        MOV P1,A				      
    	JNB P1.0,HERE				      
    	JNB P1.1,HERE2				      	
    	JNB P1.2,N5				      
    	JNB P1.3,N4				      
    	JNB P1.4,N3				
    	JNB P1.5,N2				
    	JNB P1.6,N1				
    	JNB P1.7,N0
	CONT: SETB P3.6     ;HIGH TO LOW PULSE TO ADC0804 WR PIN
	CLR P3.6 
	NOP
	NOP    
	SETB P3.6           ;LOW TO HIGH PULSE TO ADC0804 WR PIN (START CONVERSION)
	MOV IE,#01H         ;ENABLE EXTERNAL INTERRUPT (INT0)
	SETB EA             ;ENABLE GLOBAL INTERRUPT BIT IN IE REGISTER (OR SFR)				      	
    	HERE5: CJNE R5,#0FFH,HERE5