1. Computing
Binary Logic

2. Today’s Objectives What am I going to learn today?
You’re going to learn this
Be able to produce truth tables for a logic diagram
Learning Tools - How am I going to learn it?
You’re going to do this
Complete your logic gates truth table challenge

3. Re-Cap on Last Lesson Last lesson you learnt to…
Be able to recognise binary
Be able to convert denary numbers into binary numbers
Be able to convert characters into binary numbers
You need to remember that
Computers only work in 1’s and 0’s. These can also be thought of as ON/OFF or TRUE/FALSE.

4. Independent Challenge
You’re learning this
Looking at the diagrams and results in the truth tables that go with them what do you think the names of these diagrams could be?
Be able to produce truth tables for a logic diagram
HINT: Think about the results you can see when either the 1 or the 0 binary value is entered
By doing this
Complete your logic gates truth table challenge

5. A P 1 Logic Gates – NOT The NOT gate
You’re learning this
The NOT gate
Be able to produce truth tables for a logic diagram
Input A
Output P
All gates have an input and an output
By doing this A P 1
Complete your logic gates truth table challenge
Truth table to see results

6. This gate has two inputs and an output A B P
Logic Gates – AND
You’re learning this
The AND gate
Be able to produce truth tables for a logic diagram
Input A
Output P
Input B
This gate has two inputs and an output
By doing this A B P 1
Truth table to see results
Complete your logic gates truth table challenge
Everything zero unless both 1’s

7. This gate has two inputs and an output A B P
Logic Gates – OR
You’re learning this
The OR gate
Be able to produce truth tables for a logic diagram
Input A
Output P
Input B
This gate has two inputs and an output
By doing this A B P 1
Truth table to see results
Complete your logic gates truth table challenge
If there is a 1 the output is a 1

8. Working out multiple truth tables
You’re learning this
Input A
Output P
Input B
Output C
Be able to produce truth tables for a logic diagram
AND Gate
NOT gate A B C P
Think for 2 minutes about this before we complete as a class.
By doing this
Complete your logic gates truth table challenge
HINT: Output C becomes the input for the NOT gate

9. The Logic Challenge Your challenge
You’re learning this
Your challenge
Be able to produce truth tables for a logic diagram
HINT: Use the diagram and truth table sheet from the independent challenge or the class task we just complete to help.
By doing this
Complete your logic gates truth table challenge
You need to complete the challenge grid by working out the truth tables for each logic diagram