Question 7
-
(a) Draw the circuit symbol of the following logic gates:
(I)Ex-OR;
(ii)Ex-NOR.
(b)Draw the truth table for the Ex-OR logic gate.
(i)Calculate the:
(ii)sum of 11002 and 10002;
(iii)difference between 11012 and 1112.
Observation
The expected responses were:
- Logic Gate Symbols
- EX-OR
(ii) EX-NOR
- TRUTH TABLE
A |
B |
F |
0 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
0 |
(c)
(i)
(ii)
OR 1102
Question 7 required candidates to draw the diagrams of some logic gates, construct a truth table and also perform some operations on binary numbers. The Chief Examiner noted that majority of the candidates that attempted this question performed very well.