KS3 LOGIC GATES

Which of the following statements is FALSE about logic gates?

• Logic gates are the building blocks of electronic circuits.

• It is used in computer components like memory.

• Combination of logic gates is called a logic circuit

• Logic gates understand 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 of 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^n

• n÷2

Which of the following is FALSE about the NOT gate?

• Output of a NOT is complementary to the input

• When the input to a 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 an 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.

What is a logic circuit?

• Combination of logic gates that performs a specific function.

• Combination of logic gates that understands both binary and decimal number systems.

• Combination of logic gates that understands the decimal number system.