Digital Concepts Questions and Answers

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Q1
Any number with an exponent of zero is equal to:
  • A TRUE
  • B FALSE
Answer: Option B
Q2
In the decimal numbering system, what is the MSD?
  • A The middle digit of a stream of numbers
  • B The digit to the right of the decimal point
  • C The last digit on the right
  • D The digit with the most weight
Answer: Option D
Q3
Which of the following statements does NOT describe an advantage of digital technology?
  • 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.
Answer: Option A
Q4
The generic array logic (GAL) device is ________.
  • A one-time programmable
  • B reprogrammable
  • C a CMOS device
  • D reprogrammable and a CMOS device
Answer: Option B
Q5
The range of voltages between VL(max) and VH(min) are ________.
  • A unknown
  • B unnecessary
  • C unacceptable
  • D between 2 V and 5 V
Answer: Option C
Q6
What is a digital-to-analog converter?
  • 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.
Answer: Option A
Q7
What are the symbols used to represent digits in the binary number system?
  • A 0,1
  • B 0,1,2
  • C 0 through 8
  • D 1,2
Answer: Option A
Q8
A full subtracter circuit requires ________.
  • A two inputs and two outputs
  • B two inputs and three outputs
  • C three inputs and one output
  • D three inputs and two outputs
Answer: Option D
Q9
The output of an AND gate is LOW ________.
  • A all the time
  • B when any input is LOW
  • C when any input is HIGH
  • D when all inputs are HIGH
Answer: Option B
Q10
Give the decimal value of binary 10010.
  • A 610
  • B 910
  • C 1810
  • D 2010
Answer: Option C

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