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Digital Concepts
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Question
A flip-flop has ________.
Options
A. one stable state
B. no stable states
C. two stable states
D. none of the above
Correct Answer
two stable states
Digital Concepts problems
Search Results
1. Digital signals transmitted on a single conductor (and a ground) must be transmitted in:
Options
A. slow speed.
B. parallel.
C. analog.
D. serial.
Show Answer
Scratch Pad
Discuss
Correct Answer: serial.
2. PLCC packages have leads on ________.
Options
A. one side
B. two sides
C. three sides
D. four sides
Show Answer
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Discuss
Correct Answer: four sides
3. Convert the fractional binary number 0001.0010 to decimal.
Options
A. 1.40
B. 1.125
C. 1.20
D. 1.80
Show Answer
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Discuss
Correct Answer: 1.125
4. A periodic digital waveform has a pulse width (t
w
) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.
Options
A. 3.3%
B. 33.3%
C. 6%
D. 18%
Show Answer
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Discuss
Correct Answer: 33.3%
5. Which of the following is a semiconductor memory?
Options
A. RAM
B. MAR
C. CD-ROM
D. CD
Show Answer
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Discuss
Correct Answer: RAM
6. Give the decimal value of binary 10000110.
Options
A. 134
10
B. 144
10
C. 110
10
D. 126
10
Show Answer
Scratch Pad
Discuss
Correct Answer: 134
10
7. The parallel transmission of digital data:
Options
A. is much slower than the serial transmission of data.
B. requires only one signal line between sender and receiver.
C. requires as many signal lines between sender and receiver as there are data bits.
D. is less expensive than the serial method of data transmission.
Show Answer
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Discuss
Correct Answer: requires as many signal lines between sender and receiver as there are data bits.
8. An encoder converts ________.
Options
A. noncoded information into coded form
B. coded information into noncoded form
C. HIGHs to LOWs
D. LOWs to HIGHs
Show Answer
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Discuss
Correct Answer: noncoded information into coded form
9. Any number with an exponent of zero is equal to:
Options
A. zero
B. one
C. that number
D. ten
Show Answer
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Discuss
Correct Answer: one
10. A common instrument used in troubleshooting a digital circuit is a(n) ________.
Options
A. logic probe
B. oscilloscope
C. pulser
D. all of the above
Show Answer
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Discuss
Correct Answer: all of the above
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