Digital Electronics - Combinational Logic Analysis

Exercise :: Combinational Logic Analysis - General Questions

16. 

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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17. 

A 4-variable AND-OR circuit produces a 1 at its Y output. Which combination of inputs is correct?

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

Answer: Option C

Explanation:

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18. 

Implementing the expression using NAND logic, we get:

A. (A)
B. (B)
C. (C)
D. (D)

Answer: Option D

Explanation:

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19. 

Implementing the expression using NAND logic, we get:

A. (A)
B. (B)
C. (C)
D. (D)

Answer: Option B

Explanation:

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20. 

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

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

Answer: Option A

Explanation:

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