AQA 4.6.4 Logic Gates and Circuits

What are logic gates?

• Devices that apply logical operations to one or more decimal inputs to produce a single output
• Devices that apply arithmetic operations to one or more Boolean inputs to produce a single output
• Devices that apply arithmetic operations to one or more decimal inputs to produce a single output
• Devices that apply logical operations to one or more Boolean inputs to produce a single output

What is the symbol for the NOT gate?

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• 
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What is the output of the NOT gate if the input is 1?

• 1
• 0
• OR
• AND

What is the output of the NOT gate if the input is 0?

• OR
• 0
• 1
• AND

What is the symbol for the AND gate?

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• 
• 
• 

What is the output of the AND gate if both inputs are 1?

• 1
• AND
• 0
• OR

What is the output of the AND gate if one input is 0 and the other is 1?

• AND
• OR
• 1
• 0

What is the symbol for the OR gate?

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• 
• 
• 

What is the output of the OR gate if both inputs are 0?

• 1
• 0
• AND
• OR

What is the output of the OR gate if one input is 0 and the other is 1?

• OR
• 0
• AND
• 1