From Two's Complement to Binary If nonnegative Nothing changes 工 f negative 2 ∑21+1 i=0 2 2 2 ∑x12=∑(1-x1)2+1 i=05 From Two’s Complement to Binary • If nonnegative – Nothing changes • If negative  − = − = + 2 0 1 2 2 1 w i w i   − = − = − − = − + 2 0 2 0 1 2 2 (1 )2 1 w i i i w i i i w x x