tobin creg : i did not declare because all the led’s are using same port,LED0=LED1=LED2=LED3=LED4=LED5=LED6=LED7=0 are using P2^0 = LED0,P2^1 = LED1,P2^2 = LED2,P2^3 = LED3,P2^4 = LED4,P2^5 = LED5,P2^6 = LED6,P2^7 = LED7, its not output LEDsits only port name