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UGC NET CSE | December 2013 | Part 2 | Question: 40

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Which of the following statements are true ?

  1. A circuit that adds two bits, producing a sum bit and carry bit is called half adder.
  2. A circuit that adds two bits, producing a sum bit and carry bit is called full adder.
  3. A circuit that adds two bits and a carry bit producing a sum bit and a carry bit is called full adder.
  4. A device that accepts the value of a Boolean variable as input and produces its complement is called an inverter.
    1. I & II
    2. II & III
    3. I, II, III
    4. I, III & IV
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  1. A circuit that adds two bits, producing a sum bit and carry bit is called half adder.
  2. A circuit that adds two bits and a carry bit producing a sum bit and a carry bit is called full adder
  3. A device that accepts the value of a Boolean variable as input and produces its complement is called an inverter.                                                                                                                 Ans will be (d)
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II is false. It says about half adder.

Other statements are correct

hence answer must be D
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