Year 8: HT2 - 2: Boolean Logic

How many logic gates do we use in GCSE CS?

• 1

• 2

• 3

• 4

Name the logic gate shown

• AND

• OR

• NOT

• NAND

Name the logic gate shown

• AND

• OR

• NOT

• NAND

Name the logic gate shown

• AND

• OR

• NOT

• NOR

What is the purpose of the NOT gate?

• BOTH inputs must be ON (1) for the output to be ON (1)

• at least ONE input must be ON (1) for the output to be ON (1)

• inverts the INPUT value into the opposite value (e.g. 1 becomes 0 etc)

What is the purpose of the AND gate?

• BOTH inputs must be ON (1) for the output to be ON (1)

• at least ONE input must be ON (1) for the output to be ON (1)

• inverts the INPUT value into the opposite value (e.g. 1 becomes 0 etc)

What is the purpose of the OR gate?

• BOTH inputs must be ON (1) for the output to be ON (1)

• at least ONE input must be ON (1) for the output to be ON (1)

• inverts the INPUT value into the opposite value (e.g. 1 becomes 0 etc)

The truth table for which gate is shown?

• AND gate

• OR gate

• NOT gate

• NOR gate

The truth table for which gate is shown?

• AND gate

• OR gate

• NOT gate

• XOR gate

The truth table for which gate is shown?

• AND gate

• OR gate

• NOT gate

• XOR gate