Logic Gates Quiz (A Level 3.2)

What is the output of an AND gate when both inputs are true?

• False (0)

• True (1)

• Undefined

• Error

What does a NOT gate do to its input?

• Doubles the input

• Outputs the same value

• Halves the input

• Inverts the input

When will an OR gate output a true value?

• When at least one input is true

• When both inputs are false

• When both inputs are true

• When all inputs are false

What is the function of a NAND gate?

• Outputs false if any input is true

• Outputs true if at least one input is false

• Outputs true unless all inputs are true

• Outputs true only if all inputs are true

What is the output of a NOR gate when at least one input is true?

• True (1)

• False (0)

• Undefined

• Error

What does an XOR gate output when both inputs are the same?

• Undefined

• True (1)

• Error

• False (0)

What is a truth table used for?

• To represent outputs of logic gates

• To design physical circuits

• To calculate binary numbers

• To store data

How does a NAND gate differ from an AND gate?

• It has no inputs

• It is a unary gate

• It outputs true only if all inputs are true

• It outputs true unless all inputs are true

What is the output of an OR gate with inputs (0, 0)?

• Error

• False (0)

• True (1)

• Undefined

What is the primary use of XOR gates in digital circuits?

• Data encryption

• Data storage

• Error checking

• Signal amplification