Introduction - If you have any usage issues, please Google them yourself
#define F_CPU 16000000 // run CPU at 16 MHz
#define LED 5 // Boarduino LED on PB5
#define ClearBit(x,y) x &= ~_BV(y) // equivalent to cbi(x,y)
#define SetBit(x,y) x |= _BV(y) // equivalent to sbi(x,y)