One's Complement Representation (N'): 4 bits

N N'

0110 =

0001 =

0000 =

0111 =

• Comments:

  • For n-bit word, positive number in 1's complement form is represented by a zero followed by the binary magnitude as in sign-magnitude and 2's complement.
  • Representation of +ve and -ve zero
  • 1's complement can also be formed by compelementing all the bits in N

For n-bit positive integer N, define N' =( 2^n - 1) -N

N ' D

1111 =

1000 =

1101 =

0000 =

0111 =

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