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LOGIC GATES MCQs

Total Questions : 93 | Page 2 of 10 pages
Question 11. Logc Circuits are formed of
  1.    AND Gates
  2.    OR Gates
  3.    NOT Gates
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 12. A logic gate is to electricity as:
  1.    A keyboard is to a document.
  2.    A faucet is to water.
 Discuss Question
Answer: Option B. -> A faucet is to water.
Question 13. How do we get all the inputs for a truth table with 3 inputs?
  1.    Guess all the combinations of 1s and 0s
  2.    Count up in binary from 000
  3.    Count up in binary from 111
  4.    Count up in binary from 1
 Discuss Question
Answer: Option B. -> Count up in binary from 000
Question 14. What does an EXOR gate do?
  1.    Give a high output when one or more of its inputs are high
  2.    Give a high output when only one of its inputs are high
  3.    Give a low output when one or more of its inputs are high
  4.    Give a low output when only one of its inputs are high
 Discuss Question
Answer: Option B. -> Give a high output when only one of its inputs are high
Question 15. How many different combinations of 1 and 0 are possible with 2 bits?
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option B. -> 4
Question 16. What logic gate is represented by A Λ B?
  1.    OR
  2.    AND
  3.    AFTER
  4.    NOT
 Discuss Question
Answer: Option B. -> AND
Question 17. What does connecting together the inputs of NAND and NOR gates do?
  1.    Help produce multi-input gates
  2.    Produce and EXNOR gate
  3.    Produce a NOT gate
  4.    Damage the gate
 Discuss Question
Answer: Option C. -> Produce a NOT gate
Question 18. What is the output of an OR gate if the inputs are 1 and 0?
  1.    0
  2.    1
  3.    OFF
  4.    2
 Discuss Question
Answer: Option B. -> 1
Question 19. A NOT gate has…
  1.    Two inputs and one output
  2.    One input and one output
  3.    One input and two outputs
  4.    Two inputs and two outputs
 Discuss Question
Answer: Option B. -> One input and one output
Question 20. How do you make a NAND gate out of an AND gate using inverters (NOT gates)?
  1.    Invert the output from the AND gate
  2.    Invert both the inputs to the AND gate
  3.    Invert one of the inputs to the AND gate
  4.    Invert both the inputs and output of the AND gate
 Discuss Question
Answer: Option A. -> Invert the output from the AND gate

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