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Digital circuits miscellaneous

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Digital circuits miscellaneous
  1. Output of the circuit shown in the figure is equal to

    1. 0
    2. 1
    3. AB + AB
    4. (A*B) * (A*B)
Correct Option: A

The gates are XNOR
F = (A ⊕ B) ⊕ (A ⊕ B) = (AB + AB) ⊕ (AB + AB)
= (AB + AB) ⊕ (A B + AB)
= (AB + AB) ⊕ (AB + AB)
= 0


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