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GCE Computer Studies 2024 Objective — Question 11

Question 11 of 50 from the General Certificate of Education (GCE) Computer Studies 2024 Objective paper, with the correct answer and a full explanation.

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If the input variable X in Figure 1 is passed through the device in Figure 2 before going into the logic gate in Figure 1, what will be the value of output Z?

  • A. A. 0111
  • B. B. 1011
  • C. C. 1101Correct
  • D. D. 1110

Explanation

Figure 2 is an inverter (NOT gate); it gives the opposite of its input. X(0011) inverted becomes 1100. Feeding 1100 into the OR gate with Y(0101) gives 1101.

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