Electronics and Communication Engineering - Digital Electronics - Discussion

Discussion Forum : Digital Electronics - Section 14 (Q.No. 29)
29.
The circuit show in the figure has 4 boxes each described by inputs P, Q, R and outputs y, z with
Y = P ⊕ Q ⊕ R, Z = RQ + PR + QP The circuit act as a
4 bit adder giving P + Q
4 bit subtractor P - Q
4 bit subtractor Q - P
4 bit adder P + Q + R
Answer: Option
Explanation:
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