NAND gates require one less transistor than AND gates. They are often used exclusively to construct logic circuits. One such logic circuit that uses three-input NAND gates is shown in Figure P13.25.
a. Determine the truth table for this circuit.
b. Give the logic equation that represents the circuit (you do not need to reduce it).
Analysis:
a) The truth table can be obtained from the circuit considering the steps X1, X2 and F, as shown in the figure.
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