Truth Tables (AQA GCSE Computer Science): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does a truth table show?
What does a truth table show?
All possible input/output combinations
Why are truth tables useful for logic circuits?
Why are truth tables useful for logic circuits?
They show behaviour in every situation
What does a NOT gate do to its input?
What does a NOT gate do to its input?
Produces the opposite output
In a NOT gate symbol, what does the small circle at the output indicate?
In a NOT gate symbol, what does the small circle at the output indicate?
Signal is inverted
When does an AND gate output 1?
When does an AND gate output 1?
When both inputs are 1
The note compares an AND gate to what?
The note compares an AND gate to what?
A door needing two keys
When does an OR gate output 1?
When does an OR gate output 1?
When at least one input is 1
What's the only input combination that makes an OR gate output 0?
What's the only input combination that makes an OR gate output 0?
Both inputs are 0
What makes XOR gate 'exclusive' compared to OR gate?
What makes XOR gate 'exclusive' compared to OR gate?
It excludes when both inputs are true
When does an XOR gate output 1?
When does an XOR gate output 1?
When exactly one input is 1
How should you analyse combined logic circuits?
How should you analyse combined logic circuits?
Work left to right systematically
What does combining an AND gate with a NOT gate create?
What does combining an AND gate with a NOT gate create?
A NAND gate