How many AND gates are required to implement the Boolean expression, ? 1 2 3 4

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Question
How many AND gates are required to implement the Boolean expression, ?
Options
A. 1
B. 2
C. 3
D. 4

Correct Answer

3

Combinational Logic Analysis problems

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2. One positive pulse with t_w = 75 �s is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with t_w = 15 �s is applied to the other input beginning 20 �s after the leading edge of the first pulse. Which statement describes the output in relation to the inputs?
Options
A. The exclusive-OR output is a 20 µs pulse followed by a 40 µs pulse, with a separation of 15 µs between the pulses.
B. The exclusive-OR output is a 20 µs pulse followed by a 15 µs pulse, with a separation of 40 µs between the pulses.
C. The exclusive-OR output is a 15 µs pulse followed by a 40 µs pulse.
D. *The exclusive-OR output is a 20 µs pulse followed by a 15 µs pulse, followed by a 40 µs pulse.

8. Implementation of the Boolean expression results in ________.
Options
A. three AND gates, one OR gate
B. three AND gates, one NOT gate, one OR gate
C. three AND gates, one NOT gate, three OR gates
D. three AND gates, three OR gates

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