Combinational Logic Analysis - General Questions (2)

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Combinational Logic Analysis - General Questions

A 4-variable AND-OR circuit produces a 0 at its Y output. Which combination of inputs is correct?

A.	A = 0, B = 0, C = 1, D = 1
B.	A = 1, B = 1, C = 0, D = 0
C.	A = 1, B = 1, C = 1, D = 1
D.	A = 1, B = 0, C = 1, D = 0

Answer: Option D

Explanation:

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10.

The inverter can be produced with how many NAND gates?

A.	1
B.	2
C.	3
D.	4

Answer: Option A

Explanation:

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11.

How many NOT gates are required to implement the Boolean expression, mcq5_00800

A.	1
B.	2
C.	4
D.	5

Answer: Option B

Explanation:

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12.

How many AND gates are required to implement the Boolean expression, mcq5_01000

A.	1
B.	2
C.	3
D.	4

Answer: Option C

Explanation:

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13.

One positive pulse with t_w = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with t_w = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output in relation to the inputs?

A.	The exclusive-OR output is a 20 s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses.
B.	The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses.
C.	The exclusive-OR output is a 15 s pulse followed by a 40 s pulse.
D.	*The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, followed by a 40 s pulse.

Answer: Option C

Explanation:

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14.

To implement the expression mcq5_01800 , it takes one OR gate and ________.

A.	three AND gates and three inverters
B.	three AND gates and four inverters
C.	three AND gates
D.	one AND gate

Answer: Option C

Explanation:

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15.

The following waveform pattern is for a(n) ________.

mcq5_02500

A.	2-input AND gate
B.	2-input OR gate
C.	Exclusive-OR gate
D.	None of the above

Answer: Option C

Explanation:

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16.

A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?

A.
B.
C.
D.	none of the above

Answer: Option C

Explanation:

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Combinational Logic Analysis - General Questions (2)

Combinational Logic Analysis - General Questions

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