Which of the following accurately describes the logic circuit for the Boolean expression AB + BCD?
A) A 2- input NAND gate and 3- input NAND gate whose outputs are fed to a 2- input OR gate.
B) A 2- input AND gate and a 3- input AND gate whose outputs are fed to a 2- input NOR gate.
C) A 2- input OR gate and a 3- input OR gate whose outputs are fed to a 2- input AND gate.
D) A 2- input NOR gate and a 3- input NOR gate whose outputs are fed to a 2- input AND gate.

Question

Quizplus · Accepted Answer

The Boolean expression AB + BCD is realized by first taking the AND of A and B (a 2-input AND gate) and the AND of B, C, and D (a 3-input AND gate), then combining these results with an OR operation. However, the correct combination of gates to represent this operation is not listed in the options directly. The closest correct logic to represent AB + BCD would involve AND gates for the combinations and an OR gate to combine their outputs. However, due to a mistake in the options provided, option B is the closest to a correct representation, albeit with a NOR gate at the end, which is incorrect. The correct logic would actually involve a 2-input AND gate and a 3-input AND gate whose outputs are fed to a 2-input OR gate, but this option is not provided.

Which of the Following Accurately Describes the Logic Circuit for the Boolean