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Combinational Logic Circuits - General Question (6)

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Combinational Logic Circuits - General Questions

41. 

How many data select lines are required for selecting eight inputs?

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

Answer: Option C

Explanation:

No answer description available for this question

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42. 

Which of the figures in figure (a to d) is equivalent to figure (e)?

mcq4_1017_1

A. a
B. b
C. c
D. d

Answer: Option B

Explanation:

No answer description available for this question.

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43. 

Convert BCD 0001 0111 to binary.

A. 10101
B. 10010
C. 10001
D. 11000

Answer: Option C

Explanation:

No answer description available for this question.

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44. 

A 74HC147 priority encoder has ten active-LOW inputs and four active-LOW outputs. What would be the state of the four outputs if inputs 4 and 5 are LOW and all other inputs are HIGH?

A. mca6_0110a
B. mca6_0110b
C. mca6_0110c
D. mca6_0110d

Answer: Option A

Explanation:

No answer description available for this question

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45. 

Convert BCD 0001 0010 0110 to binary.

A. 1111110
B. 1111101
C. 1111000
D. 1111111

Answer: Option A

Explanation:

No answer description available for this question.

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46. 

For the device shown here, let all D inputs be LOW, both S inputs be HIGH, and the  input be HIGH. What is the status of the Y output?

mcq6_01900

A. LOW
B. HIGH
C. Don't Care
D. Cannot be determined

Answer: Option A

Explanation:

No answer description available for this question.

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47. 

For the device shown here, let all D inputs be LOW, both S inputs be HIGH, and the  input be LOW. What is the status of the Y output?

mcq6_01802

A. LOW
B. HIGH
C. Don't Care
D. Cannot be determined

Answer: Option A

Explanation:

No answer description available for this question.

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48. 

Which of the circuits in figure (a to d) is the sum-of-products implementation of figure (e)?

mcq4_1021_1

A. a
B. b
C. c
D. d

Answer: Option D

Explanation:

No answer description available for this question.

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