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Digital Electronics
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Combinational Logic Analysis
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Question
A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?
Options
A.
B.
C.
D. none of the above
Correct Answer
Combinational Logic Analysis problems
Search Results
1. Before an SOP implementation, the expression
would require a total of how many gates?
Options
A. 1
B. 2
C. 4
D. 5
Show Answer
Scratch Pad
Discuss
Correct Answer: 5
2. One possible output expression for an AND-OR-Invert circuit having one AND gate with inputs A, B, and C and one AND gate with inputs D and E is ________.
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
3. A 4-variable AND-OR circuit produces a 0 at its Y output. Which combination of inputs is correct?
Options
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
Show Answer
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Discuss
Correct Answer: A = 1, B = 0, C = 1, D = 0
4. Implementing the expression AB + CDE using NAND logic, we get:
Options
A. (A)
B. (B)
C. (C)
D. (D)
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Correct Answer: (A)
5. One of De Morgan's theorems states that
. Simply stated, this means that logically there is no difference between:
Options
A. a NOR and an AND gate with inverted inputs
B. a NAND and an OR gate with inverted inputs
C. an AND and a NOR gate with inverted inputs
D. a NOR and a NAND gate with inverted inputs
Show Answer
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Discuss
Correct Answer: a NOR and an AND gate with inverted inputs
6. A logic circuit with an output
consists of ________.
Options
A. two AND gates, two OR gates, two inverters
B. three AND gates, two OR gates, one inverter
C. two AND gates, one OR gate, two inverters
D. two AND gates, one OR gate
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Correct Answer: two AND gates, one OR gate, two inverters
7. Referring to the GAL diagram, which is the correct logic function?
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
8. The Boolean SOP expression obtained from the truth table below is ________.
Options
A.
B.
C.
D. None of these
Show Answer
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Correct Answer:
9. A 4-variable AND-OR circuit produces a 1 at its Y output. Which combination of inputs is correct?
Options
A. A = 0, B = 0, C = 0, D = 0
B. A = 0, B = 1, C = 1, D = 0
C. A = 1, B = 1, C = 0, D = 0
D. A = 1, B = 0, C = 0, D = 0
Show Answer
Scratch Pad
Discuss
Correct Answer: A = 1, B = 1, C = 0, D = 0
10. The output of an exclusive-NOR gate is 1. Which input combination is correct?
Options
A. A = 1, B = 0
B. A = 0, B = 1
C. A = 0, B = 0
D. none of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: A = 0, B = 0
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