TOPIC 10 | USING LOGIC GATES
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3 (a) Use logic gates to create given logic circuits from a:
(i) problem statement (ii) logic expression (iii) truth table 3(b) Complete a truth table from a: (i) problem statement (ii) logic expression (iii) logic circuit 3(c) Write a logic expression from a: (i) problem statement (ii) logic circuit (iii) truth table |
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A (NIGHT TIME) |
B (OCCUPIED) |
X = LIGHT (A XOR B) |
O |
O |
O |
O |
1 |
1 |
1 |
O |
1 |
1 |
1 |
O |
M |
D |
C |
A (M OR D) |
B (NOT C) |
X - ALARM (A AND B) |
O |
O |
O |
O |
1 |
O |
O |
O |
1 |
O |
O |
O |
O |
1 |
O |
1 |
1 |
1 |
O |
1 |
1 |
1 |
O |
O |
1 |
O |
O |
1 |
1 |
1 |
1 |
O |
1 |
1 |
O |
O |
1 |
1 |
O |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
O |
O |
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