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Digital Concepts problems


  • 1. What is a digital-to-analog converter?

  • Options
  • A. It takes the digital information from an audio CD and converts it to a usable form.
  • B. It allows the use of cheaper analog techniques, which are always simpler.
  • C. It stores digital data on a hard drive.
  • D. It converts direct current to alternating current.
  • Discuss
  • 2. Any number with an exponent of one is equal to:

  • Options
  • A. zero.
  • B. one.
  • C. two.
  • D. that number.
  • Discuss
  • 3. The frequency of a pulse train is 2 kHz. The pulse period is ________.

  • Options
  • A. 5 ms
  • B. 50 ms
  • C. 500 µs
  • D. 2 µs
  • Discuss
  • 4. The rise time is the time it takes a pulse to go from ________.

  • Options
  • A. the base line to the maximum HIGH voltage
  • B. 10% of the pulse amplitude to the maximum HIGH voltage
  • C. the base line to 90% of the pulse amplitude
  • D. 10% of the pulse amplitude to 90% of the pulse amplitude
  • Discuss
  • 5. What is the decimal value of 2?1 ?

  • Options
  • A. 0.5
  • B. 0.25
  • C. 0.05
  • D. 0.1
  • Discuss
  • 6. The range of voltages between VL(max) and VH(min) are ________.

  • Options
  • A. unknown
  • B. unnecessary
  • C. unacceptable
  • D. between 2 V and 5 V
  • Discuss
  • 7. What is the decimal value of 23 ?

  • Options
  • A. 2
  • B. 4
  • C. 6
  • D. 8
  • Discuss
  • 8. Which of the following statements does NOT describe an advantage of digital technology?

  • Options
  • A. The values may vary over a continuous range.
  • B. The circuits are less affected by noise.
  • C. The operation can be programmed.
  • D. Information storage is easy.
  • Discuss
  • 9. A decoder converts ________.

  • Options
  • A. noncoded information into coded form
  • B. coded information into noncoded form
  • C. HIGHs to LOWs
  • D. LOWs to HIGHs
  • Discuss
  • 10. A classification of ICs with complexities of 100 to 10,000 equivalent gates per chip is known as ________.

  • Options
  • A. SSI
  • B. MSI
  • C. LSI
  • D. VLSI
  • Discuss

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