Understanding Logic Gates Quiz

Which of the following best describes the output of an AND gate when both inputs are HIGH (logic 1)?

• The output is always LOW (logic 0)

• The output is always HIGH (logic 1)

• The output alternates between HIGH and LOW

• The output is unpredictable

What is the output of an OR gate if one input is LOW (logic 0) and the other is HIGH (logic 1)?

• LOW (logic 0)

• HIGH (logic 1)

• Depends on the previous state

• Cannot be determined

Which of the following truth tables correctly represents a NOT gate?

• Input 0 → Output 0, Input 1 → Output 1

• Input 0 → Output 1, Input 1 → Output 0

• Input 0 → Output 1, Input 1 → Output 1

• Input 0 → Output 0, Input 1 → Output 0

A NAND gate is a combination of which two basic logic gates?

• AND followed by NOT

• OR followed by NOT

• NOT followed by AND

• NOT followed by OR

Which logic gate produces a HIGH output only when both inputs are LOW?

• NOR gate

• NAND gate

• XOR gate

• AND gate

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

• HIGH (logic 1)

• LOW (logic 0)

• Alternates between HIGH and LOW

• Cannot be determined

Which of the following is a correct application of an XOR gate?

• Light turns on only if both switches are in the same position

• Light turns on if either switch is on, but not both

• Light turns on only if both switches are off

• Light turns on only if both switches are on

If the inputs to a NOR gate are 1 and 0, what is the output?

• 1

• 0

• Alternates between 1 and 0

• Cannot be determined

Which logic gate inverts its input signal?

• AND gate

• OR gate

• NOT gate

• NAND gate

What is the output of a NAND gate if both inputs are HIGH (logic 1)?

• HIGH (logic 1)

• LOW (logic 0)

• Alternates between HIGH and LOW

• Cannot be determined