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Computing

Computing · Quick practice · answer shown after each question

Logic

Question 1 of 10

Question 1 of 10

Simplify the Boolean expression A·B + A·B̄.

Question 2 of 10

Question 2 of 10

A NOR gate outputs 1 only when

Question 3 of 10

Question 3 of 10

The output of an AND gate is 1 only when

Question 4 of 10

Question 4 of 10

The XOR gate outputs 1 when

Question 5 of 10

Question 5 of 10

By De Morgan's law, NOT(A AND B) equals

Question 6 of 10

Question 6 of 10

A half adder produces a sum and carry using

Question 7 of 10

Question 7 of 10

How many rows are in the truth table of a 3-input logic gate?

Question 8 of 10

Question 8 of 10

The Boolean expression for an OR gate with inputs A and B is

Question 9 of 10

Question 9 of 10

What is the output of an XOR gate when both inputs are 1?

Question 10 of 10

Question 10 of 10

A NOT gate

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.