NECO Computer Studies 2025 Objective — Question 12

Question 12 of 50 from the National Examinations Council (NECO) Computer Studies 2025 Objective paper, with the correct answer and a full explanation.

If the input variable Y in Figure 1 is passed through the device in Figure 2 before going into the logic gate in Figure 1, compute the output at Z

A. 1101
B. 0100
C. 0010Correct
D. 0001

Explanation

If we feed Y(0101) into the NOT gate, its complement Y'(1010) is obtained. Now, feeding X and Y' into the AND gate gives an output Z of 0010.

Sign up free to unlock

Score tracking
Practice history
Saved questions
Progress dashboard
Personalized sessions
Weak-topic breakdown

…and/or go further with premium services and No Ads.

Create free account

More questions from Computer Studies 2025 Objective More Computer Studies past papers