Suppose that two numbers in signed twoscomplement form
Chapter 7, Problem P7.56(choose chapter or problem)
Suppose that two numbers in signed twoscomplement form have been added. S1 is the sign bit of the first number, S2 is the sign bit of the second number, and ST is the sign bit of the total. Suppose that we want a logic circuit with output E that is high if either overflow or underflow has occurred; otherwise, E is to remain low. a. Write the truth table. b. Find an SOP expression composed of minterms for E. c. Draw a circuit that yields E, using AND, OR, and NOT gates.
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