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3. [25 points] You are asked to design a circuit to detect if an overflow occurs when adding two integers represented in two's complement: Z=X+Y.

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3. [25 points] You are asked to design a circuit to detect if an overflow occurs when adding two integers represented in two's complement: Z=X+Y. Let Sz, Sx, and Sy be the sign bit for Z, X, and Y respectively, and they are fed as input to the circuit. Let O be the output bit of the circuit, whose value is 1 if an overflow happens, and 0 if otherwise. a) Build the truth table for O as a Boolean function of Sx, Sy, and Sz. b) Write the canonical expression (sum-of-product) for the Boolean function defined in the part a. c) Implement the Boolean expression defined in part b with a circuit by using AND, OR, and NOT gates. Draw the wiring diagram

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