Multiple choice

Let A = 1111110 and B = 0000 1010 be two 8 - bit 2's complement numbers. Their product in 2's complement is

  1. 1100 0100

  2. 1001 1100

  3. 1010 0101

  4. 1101 0101
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A Correct answer
Explanation

 Since MSB of a is 1, 2's complement of A = 0000 0110. Therefore A = -6 B = 10. A x B = -60 Since a negative number we have to find the 2's complement of -60 Represent -60 in 2's complement. Binary of 60 = 0011 1100 2's complement = 1100 0100

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