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Digital Electronics - Engineering

Q1:

If A = B = 1, the outputs P and Q in the given figure are

A P = Q = 0

B P = 0, Q = 1

C P = 1, Q = 0

D P = Q = 1

ANS:B - P = 0, Q = 1

It is a half adder 1 + 1 = 10. Therefore SUM = P = 0 and Carry = Q = 1.