Digital Electronics

Which of the following logical operations is represented by the + sign in Boolean algebra?

• inversion

• AND

• OR

• complementation

What is the result of the logical operation A AND B when A is true and B is false?

• true

• false

• undefined

• error

In Boolean algebra, which operation is represented by the * sign?

• AND

• OR

• NOT

• XOR

Which of the following is the complement of the Boolean variable A?

• A

• 1

• 0

• NOT A

The output of a NOR gate is HIGH if ________.

• all inputs are HIGH

• any input is HIGH

• any input is LOW

• all inputs are LOW

What is the result of the logical operation A OR B when A is false and B is true?

• true

• false

• undefined

• error

If a 3-input AND gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

• 1

• 2

• 7

• 8

The Boolean expression for a 3-input AND gate is ________.

• X = AB

• X = ABC

• X = A + B + C

• X = AB + C

The output of a NOT gate is HIGH when ________.

• the input is LOW

• the input is HIGH

• power is applied to the gate's IC

• power is removed from the gate's IC

How is a J-K flip-flop made to toggle?

• J = 0, K = 0

• J = 1, K = 0

• J = 0, K = 1

• J = 1, K = 1