Digital Concepts Questions and Answers

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Q41
How many binary bits are necessary to represent 748 different numbers?
  • A 9
  • B 7
  • C 10
  • D 8
Answer: Option C
Q42
eriodic digital waveform has a pulse width (tw) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.
  • A 3.3%
  • B 33.3%
  • C 6%
  • D 18%
Answer: Option B
Q43
Any number with an exponent of one is equal to:
  • A zero.
  • B one.
  • C two.
  • D that number.
Answer: Option D
Q44
Serial format means digital signals are:
  • A sent over many conductors simultaneously.
  • B sent over one conductor sequentially.
  • C sent in groups of eight signals.
  • D sent in binary coded decimal.
Answer: Option B
Q45
What is the decimal value of 2–1 ?
  • A 0.5
  • B 0.25
  • C 0.05
  • D 0.1
Answer: Option A
Q46
Which format can send several bits of information faster?
  • A Parallel
  • B Serial
  • C Both are the same
  • D Cannot tell
Answer: Option A
Q47
The frequency of a pulse train is 2 kHz. The pulse period is ________.
  • A 5 ms
  • B 50 ms
  • C 500 s
  • D 2 s
Answer: Option C
Q48
What has happened to the advances in digital technologies over the past three decades?
  • A Slowed down considerably
  • B Continued to increase, but at a decreasing rate
  • C Made excellent progress
  • D Nothing short of phenomenal
Answer: Option C
Q49
A type of digital circuit technology that uses bipolar junction transistors is ________.
  • A TTL
  • B CMOS
  • C LSI
  • D NMOS
Answer: Option A
Q50
How many unique symbols are used in the decimal number system?
  • A One
  • B Nine
  • C Ten
  • D Unlimited
Answer: Option C

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