Logic & Boolean

Which of the following statement is FALSE about logic gates?

• Logic gates are the building blocks of electronic circuits.

• It used in computer components like memory.

• Combination of logic gates is called a logic circuit.

• Logic gates understand the binary language.

• None of the above.

What is a truth table?

• A table that denotes the different outputs of the logic gates or circuit with respect to different inputs.

• A table that represents how logic gates are combined to form a logic circuit.

• A table that shows the input combinations that result in a binary output 1 in a logic gate.

A logic circuit has 4 inputs. How many output combinations are possible?

• 8

• 16

• 32

• 4

A logic circuit has n inputs. How many output combinations are possible?

• 2×n

• 2 to the power n

• n÷2

Which of the following is FALSE about a NOT gate?

• The output of NOT is complementary to the input

• When the input to NOT gate is 0, the output is 1.

• A NOT gate has two input signals and an output signal.

• None of the above

When is the output for AND gate TRUE?

• When both inputs are TRUE.

• When at least one of the inputs is TRUE.

• When both inputs are FALSE

• When at least one of the inputs is FALSE.

When is the output for OR gate TRUE?

• When both inputs are TRUE.

• When at least one of the inputs is TRUE.

• When both inputs are FALSE

• When at least one of the inputs is FALSE.

An AND gate has two inputs A and B. What is the Boolean expression for this logic gate?

• A^B

• A˅B

• ¬A^B

What is the Boolean expression for this logic gate?

• X=A^B

• X=A˅B

• X=A*B

What is the Boolean expression for this logic gate?

• X=&A

• X=¬A

• X=˅A