in Digital Logic
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2 votes
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The addition of 4 bits two complement binary numbers $1101$ and $0100$ results in

  1. 0001 and an overflow
  2. 1001 and no overflow
  3. 0001 and no overflow
  4. 1001 and an overflow
in Digital Logic
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1 Answer

3 votes
3 votes
Overflow cannot occur when number under addition are of opposite sign

Here one number is +ve and another is -ve

Now we perform 2's compliment arithmetic

 1101 + 0100 == 10001 discard carry as in 2's compliment rule

Final answer 0001 no overflow

1 comment

how do you know whether it is 1’s compliment addition or 1’s compliment addition
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