Question

2's complement method use I bit representation
(22)10-(65)10=(?)2​

Answer 1

Answer:

Evaluate:

(i) 110110 - 10110

Solution:

The numbers of bits in the subtrahend is 5 while that of minuend is 6. We make the number of bits in the subtrahend equal to that of minuend by taking a `0’ in the sixth place of the subtrahend.

Now, 2’s complement of 010110 is (101101 + 1) i.e.101010. Adding this with the minuend.

1 1 0 1 1 0 Minuend

1 0 1 0 1 0 2’s complement of subtrahend

Carry over 1 1 0 0 0 0 0 Result of addition

After dropping the carry over we get the result of subtraction to be 100000.

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Answer 2

Answer:

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A CD ROM has 700 megabytes of storage space. What per cent of the space is used by a file, that takes up 154 megabytes?