Question

Examples of subtraction using 1s complement

Answer 1

complement of 10011 is 011010. Hence

                                     Minued -              1 1 0 1 0 1

      1’s complement of subtrahend -              0 1 1 0 1 0

                                Carry over -     1       0 0 1 1 1 1

                                                                           1

                                                              0 1 0 0 0 0

The required difference is 10000


(ii) 101011 – 111001

Solution:

1’s complement of 111001 is 000110. Hence

                                    Minued -              1 0 1 0 1 1

                           1’s complement -            0 0 0 1 1 0

                                                              1 1 0 0 0 1

Hence the difference is – 1 1 1 0


(iii) 1011.001 – 110.10

Solution:

1’s complement of 0110.100 is 1001.011 Hence

                                     Minued -              1 0 1 1 . 0 0 1

      1’s complement of subtrahend -              1 0 0 1 . 0 1 1

                                Carry over -     1       0 1 0 0 . 1 0 0

                                                                                1

                                                              0 1 0 0 . 1 0 1

Hence the required difference is 100.101


(iv) 10110.01 – 11010.10

Solution:

1’s complement of 11010.10 is 00101.01

                                                  1 0 1 1 0 . 0 1

                                                  0 0 1 0 1 . 0 1

                                                  1 1 0 1 1 . 1 0

Answer 2

Answer:

1100.011 right answer for this question