AQA 8525 CS 4.2 Logic Gates and Circuits (CD Video)

What does a NOT gate do?

• Reverses the input

• Adds binary numbers

• Takes two inputs

• Outputs a current

What inputs are required for an AND gate to produce an output of 1?

• Both inputs need to be 0

• Both inputs need to be 1

• At least one input needs to be 1

• At least one input needs to be 0

How does an OR gate produce an output of 1?

• Both inputs need to be 0

• Both inputs need to be 1

• At least one input needs to be 1

• At least one input needs to be 0

What is the difference between an XOR gate and an OR gate?

• XOR gate outputs 0 when both inputs are 1, while OR gate outputs 1

• XOR gate outputs 1 when both inputs are 1, while OR gate outputs 0

• XOR gate takes two inputs, while OR gate takes one input

• XOR gate reverses the input, while OR gate does not

What is the symbol for an OR gate?

• O

• D

• T

• X

What is the symbol for an XOR gate?

• O

• D

• T

• X

What is the symbol for an AND gate?

• O

• D

• T

• X

What is the symbol for a NOT gate?

• O

• D

• T

• X

What is the name of a gate that combines an AND gate and a NOT gate?

• NAND gate

• NOR gate

• XOR gate

• AND gate

What is the name of a gate that combines an OR gate and a NOT gate?

• NAND gate

• NOR gate

• XOR gate

• AND gate