WAEC Computer Studies 2024 Objective — Question 11

Question 11 of 50 from the West African Examinations Council (WAEC) Computer Studies 2024 Objective paper, with the correct answer and a full explanation.

11. 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 the output Z?

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

Explanation

Figure 2 is a NOT gate that inverses the input. Passing X=0011 through the NOT gate gives 1100. Passed through the OR gate with Y, Z=1110.

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