Logic Gates Review

What is the output of a Buffer gate when the input is 1?

• -1

• 2

• 0

• 1

What symbol represents the NOT gate?

• 
• 
• 
• 

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

• 0

• 1

• undefined

• -1

How does a NAND gate differ from an AND gate?

• A NAND gate has the same output as an OR gate.

• A NAND gate requires at least one input to be true to output true.

• A NAND gate outputs true only when all inputs are true.

• A NAND gate outputs the opposite of an AND gate; it outputs false only when all inputs are true.

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

• 2

• 1

• 1.5

• 0

What is the symbol for the NOR gate?

• The symbol for the NOR gate is a single triangle.

• The symbol for the NOR gate is a rectangle with a line through it.

• The symbol for the NOR gate is an AND gate symbol with a small circle at the output.

• The symbol for the NOR gate is a combination of an OR gate symbol with a small circle at the output.

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

• false

• 1

• true

• 0

What does the XNOR gate output when the inputs are different?

• undefined

• 1.5

• 0

• 1

What is the truth table for a Buffer gate?

• Input | Output 0 | 0 1 | 1

• Input | Output 0 | 1 1 | 0

• Input | Output 0 | 0 1 | 1 2 | 2

• Input | Output 0 | 0 1 | 1 1 | 0

How many inputs can an AND gate have?

• An AND gate can have multiple inputs, commonly 2 to many.

• An AND gate can have no inputs.

• An AND gate can have exactly 5 inputs.

• An AND gate can only have one input.