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9.9 Option - The Age of Silicon: 5. Circuits and information processing Answers
1. A three input OR gate
Related truth table:
(Can you use a NOR gate and another gate to achieve the same result?)
Yes simply add a NOT gate (which is an inverter) to the output. This would change the outputs...0 would become 1 and vice versa.
2. A three input AND gate.
Related truth table:
3. Answer to Q 32 (b) 2003 Physics exam
Truth table
| A | B | P | Q | R |
|---|---|---|---|---|
| 0 | 0 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 | 1 |
| 0 | 1 | 1 | 1 | 0 |
| 1 | 1 | 0 | 1 | 1 |
4. Answer to Q 32 (b) (i) and (ii) of the 2004 HSC Physics exam
Answer (b) (i) - The gate represented here is an OR gate. The output would be a 1.
Answer (b) (ii) - Truth table
| A | B | C | D | E | X | Output |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 0 | 1 | OR gate | 1 |
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