Understanding Logic Gates for GCSE

What is the primary function of a NOT gate in a logic circuit?

• It outputs a 1 if both inputs are 1.

• It outputs a 0 if both inputs are 0.

• It reverses the input signal.

• It outputs a 1 if at least one input is 1.

Which logic gate requires both inputs to be 1 for the output to be 1?

• OR gate

• NOT gate

• AND gate

• XOR gate

In an OR gate, what is the output when both inputs are 0?

• 0

• 1

• 2

• Undefined

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

• 0

• 1

• 2

• Undefined

Which logic gate symbol resembles the letter 'D'?

• OR gate

• NOT gate

• AND gate

• NAND gate

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

• 0

• 1

• 2

• Undefined

Which logic gate symbol resembles the letter 'O'?

• OR gate

• NOT gate

• AND gate

• NOR gate

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

• 0

• 1

• 2

• Undefined

Which logic gate has only one input?

• OR gate

• NOT gate

• AND gate

• XOR gate

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

• 0

• 1

• 2

• Undefined