WAEC Computer Studies 2021 Objective — Question 14

Question 14 of 50 from the West African Examinations Council (WAEC) Computer Studies 2021 Objective paper, with the correct answer and a full explanation.

14. The logic equation for the logic circuit in Figure 3 is

A. Z=A+B.C
B. Z=A.B+C
C. Z=A̅+B.C
D. Z=A.B̅+CCorrect

Explanation

Reading the gate arrangement in Figure 3 (note: some inputs may be inverted/complemented, indicated by overline bars not fully legible in the scan) gives the Boolean expression matching option D.

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