Logic Gates & Boolean Algebra

What is the main function of logic gates in digital systems?

• Store physical objects

• Perform arithmetic operations

• Process binary inputs

• Display visual data

Which gate is used in industrial machines to ensure safety by checking two conditions?

• OR gate

• AND gate

• NOR gate

• XOR gate

What is the primary function of an OR gate in a security system?

• Process binary outputs

• Trigger an alarm

• Control machine operations

• Store data

Which logic gate is often used for inverting control signals?

• NAND gate

• NOR gate

• NOT gate

• XOR gate

What type of logic gate forms the basis of memory cells in flash memory devices?

• XOR gate

• NAND gate

• NOR gate

• AND gate

Which gate ensures a light control system remains off until a motion is detected?

• NOR gate

• AND gate

• NOT gate

• XOR gate

What is the output condition for an AND gate?

• True when all inputs are false

• False when any input is true

• True when all inputs are true

• True when any input is true

What Boolean law states A+B=B+A?

• Associative Law

• Commutative Law of Addition

• Distributive Law

• Identity Law

Which Boolean law supports A×(B×C)=(A×B)×C?

• Associative Law of Multiplication

• Commutative Law of Multiplication

• Distributive Law

• Complement Law

In Boolean algebra, what is the inverse of a variable called?

• Literal

• Complement

• Product term

• Sum term