WAEC Computer Studies 2025 Objective — Question 10

Question 10 of 50 from the West African Examinations Council (WAEC) Computer Studies 2025 Objective paper, with the correct answer and a full explanation.

Use the logic devices in Figures 1 and 2 to answer this question. The input variables X and Y have values of 0011 and 0101 respectively. Compute the value of the output Z in Figure 1 using the values of X and Y given.

A. 1110
B. 1000
C. 0001Correct
D. 0111

Explanation

Figure 1 is an AND gate. Z = X AND Y = 0011 AND 0101 = 0001 (bit-by-bit AND of the two 4-bit values).

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