waecE-LEARNING
Electronics Paper 2, May/June 2010  
Questions: 1 2 3 4 5, 6 &7 8 9 10 Main
General Comments
Weakness/Remedies
Strength

Question 9

(a) (i) Draw the logic circuit of a two input AND gate using diodes and resistors
(ii) Provide the truth table for the logic gate in (a) (i) .

b) Draw the logic symbol of an exclusive OR gate

_____________________________________________________________________________________________________
OBSERVATION

The expected answers were:

(a) DRL AND gate


(ii) Truth Table

A

B

F

0

0

0

0

1

0

1

0

0

1

1

1

b)

The question was on Logic gates. It was quite popular. A significant number of candidates answered the question correctly.
The performance was quite encouraging.

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