Complete the truth table for the XOR logic gate - AQA - GCSE Computer Science - Question 11 - 2023 - Paper 2
Question 11
Complete the truth table for the XOR logic gate.
| A | B | A XOR B |
|---|---|---------|
| 0 | 0 | |
| 0 | 1 | |
| 1 | 0 | |
| 1 | 1 | ... show full transcript
Worked Solution & Example Answer:Complete the truth table for the XOR logic gate - AQA - GCSE Computer Science - Question 11 - 2023 - Paper 2
Step 1
Complete the truth table for the XOR logic gate.
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Answer
A
B
A XOR B
0
0
0
0
1
1
1
0
1
1
1
0
In an XOR gate, the output is true (1) if and only if one of the inputs is true. Therefore, the completed truth table reflects these conditions accurately.
Step 2
State the type of logic gate labelled G1 in Figure 3.
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Answer
The logic gate G1 is an AND gate.
Step 3
Write a Boolean expression to show how the output D is calculated from the inputs A, B and C in Figure 3.
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Answer
The Boolean expression for the output D is given by:
D=AimesB+C
Here, the output D is true when both A and B are true (i.e., A AND B) or when C is true.
