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MCQs

Total Questions : 457 | Page 4 of 46 pages
Question 31. How many full adders are required to construct an m- bit parallel adder?
  1.    m/2
  2.    m-1
  3.    m
  4.    m+1
  5.    None of the above
 Discuss Question
Answer: Option B. -> m-1
Question 32. The number of binary bits required to represent a hexadecimal digit is
  1.    3
  2.    4
  3.    6
  4.    8
  5.    None of the above
 Discuss Question
Answer: Option B. -> 4
Question 33. Instead of counting with binary numbers, a ring counter uses words that have a single high _____
  1.    bytes
  2.    bit
  3.    gate
  4.    chip
  5.    None of the above
 Discuss Question
Answer: Option B. -> bit
Question 34. Multiplication of 1112 by 1012 is
  1.    1100112
  2.    1000112
  3.    1111002
  4.    0001012
  5.    None of the above
 Discuss Question
Answer: Option B. -> 1000112
Question 35. For what logic gate the outputs in complement of the input?
  1.    NOT
  2.    AND
  3.    OR
  4.    XOR
  5.    None of the above
 Discuss Question
Answer: Option A. -> NOT
Question 36. What is the decimal equivalent of 210?
  1.    4096
  2.    1024
  3.    1000
  4.    16
  5.    None of the above
 Discuss Question
Answer: Option B. -> 1024
Question 37. The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is
  1.    fanout
  2.    bipolar
  3.    chip
  4.    universal logic circuit
  5.    None of the above
 Discuss Question
Answer: Option A. -> fanout
Question 38. Conversion of hexadecimal number 6B216 to it's binary number equivalent is
  1.    11110001101112
  2.    0110101100102
  3.    01100110011112
  4.    111111112
  5.    None of the above
 Discuss Question
Answer: Option B. -> 0110101100102
Question 39. In which of the following adder circuits, the carry look ripple delay is eliminated?
  1.    Half adder
  2.    Full adder
  3.    Parallel adder
  4.    Carry-look-ahead adder
  5.    None of the above
 Discuss Question
Answer: Option D. -> Carry-look-ahead adder
Question 40. The output of the following gate is 0 only if at least one of the inputs is 1:
  1.    AND gate
  2.    OR gate
  3.    EX-OR gate
  4.    NOR gate
  5.    None of the above
 Discuss Question
Answer: Option D. -> NOR gate

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