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Digital Electronics
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Combinational Logic Circuits
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Question
When decisions demand one of many possible actions, the ELSIF control structure is used.
Options
A. True
B. False
Correct Answer
True
More questions
1. ROMs are used to store data that generally cannot be easily changed.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
2. The output of a NOR gate is HIGH if ________.
Options
A. all inputs are HIGH
B. any input is HIGH
C. any input is LOW
D. all inputs are LOW
Show Answer
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Discuss
Correct Answer: all inputs are LOW
3. The Boolean equation
results from this Karnaugh map.
Options
A. True
B. False
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Correct Answer: False
4. This is an example of a POS expression:
Options
A. True
B. False
Show Answer
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Correct Answer: True
5. The correct output for this XOR truth table is ________.
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
6. The Boolean expression for the logic circuit shown is _____.
Options
A.
B.
C.
D.
Show Answer
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Correct Answer:
7. In the VHDL code of the stepper motor, the
cout
outputs are bit_vector type because they are binary bit patterns.
Options
A. True
B. False
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Correct Answer: True
8. The term
race condition
describes the time that an active signal must be present at the input to a flip-flop before an active clock edge is applied.
Options
A. True
B. False
Show Answer
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Correct Answer: False
9. A method for the automated testing of printed circuit boards is called a(n) ________.
Options
A. bed-of-nails
B. LUT
C. CLB
D. CPLD
Show Answer
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Correct Answer: bed-of-nails
10. Which of the following logic families has the shortest propagation delay?
Options
A. CMOS
B. BiCMOS
C. ECL
D. 74SXX
Show Answer
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Discuss
Correct Answer: ECL
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