83. OCR 2.4 Combining logical operators

What are the three basic logic gates commonly used in Boolean algebra?

• XOR, NAND, NOR

• NOT, AND, OR

• XNOR, AND, OR

• NAND, NOR, XOR

Which Boolean operator is used to invert the input signal?

• AND

• OR

• NOT

• XOR

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

• True

• False

• Undefined

• Depends on the circuit

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

• True

• False

• Undefined

• Depends on the circuit

Which of the following is a correct statement about Boolean expressions?

• They can only be written in one way

• They are similar to mathematical expressions

• They are always complex

• They cannot be simplified

What is the purpose of combining Boolean operators in logic circuits?

• To simplify mathematical expressions

• To create complex logic expressions

• To increase the number of inputs

• To reduce the number of gates

Which logic gate outputs true only when both inputs are true?

• OR

• AND

• NOT

• NOR

Which logic gate outputs true when at least one input is true?

• AND

• OR

• NOT

• NAND

Which logic gate outputs false only when both inputs are true?

• NAND

• NOR

• XOR

• AND

What is the result of a NOT gate if the input is true?

• True

• False

• Undefined

• Depends on the circuit