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MCQs

Total Questions : 228 | Page 4 of 23 pages
Question 31. Conversion of binary number 10010012 to hexadecimal is
  1.    3916
  2.    None of these
  3.    4916
  4.    4216
  5.    4016
 Discuss Question
Answer: Option C. -> 4916
Question 32. What logic function is obtained by adding an inverter to the inputs of an AND gate?
  1.    NOR
  2.    XOR
  3.    NAND
  4.    None of these
  5.    OR
 Discuss Question
Answer: Option A. -> NOR
Question 33. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
  1.    None of these
  2.    decoder
  3.    multiplexer
  4.    demultiplexer
  5.    encoder
 Discuss Question
Answer: Option C. -> multiplexer
Question 34. How many inputs signals can a gate have?
  1.    None of these
  2.    one
  3.    more than one
  4.    both (a) and (b)
  5.    two only
 Discuss Question
Answer: Option D. -> both (a) and (b)
Question 35. Which logic family dissipates the minimum power?
  1.    ECL
  2.    DTL
  3.    None of these
  4.    TTL
  5.    CMOS
 Discuss Question
Answer: Option E. -> CMOS
Question 36. A bus is a group of _____ carrying digital signals.
  1.    registers
  2.    transistors
  3.    gates
  4.    None of these
  5.    wires
 Discuss Question
Answer: Option E. -> wires
Question 37. Addition of 102 and 112 is
  1.    1012
  2.    1002
  3.    1102
  4.    1112
  5.    None of these
 Discuss Question
Answer: Option A. -> 1012
Question 38. How many bits are required to encode all twenty six letters ten symbols, and ten numerals?
  1.    3
  2.    5
  3.    None of these
  4.    6
  5.    2
 Discuss Question
Answer: Option D. -> 6
Question 39. De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.
  1.    AND
  2.    XAND
  3.    XOR
  4.    NOR
  5.    None of these
 Discuss Question
Answer: Option A. -> AND
Question 40. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is
  1.    X + YZ
  2.    XZ + Y
  3.    None of these
  4.    X + Y + Z
  5.    XY + YZ
 Discuss Question
Answer: Option A. -> X + YZ

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