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Electronics Paper 2, Nov/Dec. 2008  
Questions: 1 2 3 4 5 6 7 Main
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Question 5

(a)        Draw the logic gate circuit for the Boolean expression:
                      oollkk 

                      F = A· B + A· C

                       

(b)        Draw the truth table for the Boolean expression:
                             yy            
                          F  =  A + B

_____________________________________________________________________________________________________
OBSERVATION

            The expected answers were:

(a)

 

                                                                              

 

 

(b)       


A

B

F

O

O

1

O

1

O

1

O

O

1

1

O

This question was on logic gates.

Candidates’ attempts in this question were satisfactory.  Virtually all the candidates that answered this question scored full mark which suggested a thorough understanding of the topic.

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