1. Questions Describe the following gates
AND OR
NOT
EXOR
Describe the difference between XOR and OR
How do I know if I have achieved today?
I can draw the logic gate and truth table for each of the gates: AND, OR, NOT and XOR
I can count up to 8 in binary
I can build a truth table for a combination of logic gates (up to four with three inputs)
I can write a Boolean Expression for a given series of logic gates or produce a logic diagram from a Boolean expression.

2. Task Support (1) – Answer a question
Problem –
Produce a truth table for the following logic diagram. The structure of the table has been done for you.
Investigation – Fill out the truth table for each of the logic gates below. . A R Q B A B R Q 1

3. Task Support (2) – Answer a question
Problem –
Produce a truth table for the following logic diagram.
Investigation – The table below shows how to count up to 7 in binary. Can you spot the pattern with each column? Can you write the denary number next to each number? . A R 4 2 1 Q B C

4. Task Extend (1) – Answer a question
Problem –
Produce a truth table and Boolean Expression for the following logic diagram.
Investigation – Write out an example of Boolean algebra for each of the following logic gates + NOT + AND + OR + XOR Notice below how the Boolean Algebra has been written out above each gate. It is then changed into an expression by using brackets to replace intermediate steps. .
R = A AND B A B C R Q
A AND B
R AND Q
R AND Q
(A AND B)AND Q

5. Task Extend (2) – Answer a question
Problem –
Produce a truth table and Boolean Expression for the following logic diagram.
Investigation – Write out an example of Boolean algebra for each of the following logic gates + NOT + AND + OR + XOR Notice below how the Boolean Algebra has been written out above each gate. It is then changed into an expression by using brackets to replace intermediate steps. .
R = A AND B A B C R Q
A AND B
R AND Q
R AND Q
(A AND B)AND Q