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Q1:

Consider the following statements a half adder.
  1. As a half subtractor also
  2. has two outputs CH = x x y and Sn = x ⊕ y for two inputs x and y
  3. has two outputs CH = x + y and SH = x ⊕ y for two inputs x and y
  4. is a combinational circuit
Which of the statements given above is/are correct?

A 1, 3, 4

B 1, 2, 4

C 4 only

D 2 and 3

ANS:B - 1, 2, 4

Let two bit, verify S and B will same.



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