1. Activity 1 Input Device Output Device CPU RAM Hard Drive (Hard Disk)
5 minutes
On your white boards explain the role of the following computer components (explain what they do):
Input Device
Output Device
CPU
RAM
Hard Drive (Hard Disk)

2. Activity 1
5 minutes
ANSWERS to ACTIVITY 1
Input Device – A device which sends data to the CPU (e.g. mouse, keyboard etc)
Output Device - A device which receives information from the CPU (e.g. monitor, speakers etc)
CPU – The ‘brain’ of the computer. It does all the processing – all the thinking!
RAM – This is where programs are loaded when they are open – think of this as the CPU’s ‘work station’.
Hard Drive (Hard Disk) – This is the long term storage for programs and files.

3. Introduction to Computer Hardware
How it all works?
Introduction to Computer Hardware

4. Lesson Objectives Lesson Objectives
Remember that a computer is made up of a range of components and remember their purpose / function.
Understand the role of the CPU, RAM and Hard Drive
Understand how the CPU, RAM and Hard Drive work together.
Understand how the input and output devices work with the CPU
Success Criteria
ALL: Will be able to describe the steps that take place when you open a program.
MOST: Will be able to describe the steps that take place when you are using a program.
SOME: Will be able to produce and annotate a diagram to show how the Input & Output devices, CPU, RAM and Hard Drive work together.
Literacy – Key Words
CPU
Central Processing Unit – the brain of the computer.
RAM
Random Access Memory – where programs are loaded when they are in use.
I/O Devices
The input devices send data to the CPU, the output devices receive information from the CPU.
Hard Drive
The computer’s long term storage for programs and files

5. Learning Habits
WBs
This topic will look at computers and their hardware. To be successful in this unit you will need to make use specific learning habits… which ones will you use?
Noticing details
Adapting :
Reflecting and making changes
Reasoning:
Thinking rigorously, methodically and giving explanations.
Empathising…
…with feelings and views
Effective use of time
Questioning:
Asking questions to get below the surface
Listening…
…to understand
Imagining…
…how things could be and seeing a range of possibilities
Distilling…
…what you have learnt and what you need to learn
Collaboration:
Working effectively with others
Meta Learning:
Talking about how you have been learning
Imitation:
Picking up good habits from others
Independence:
Working effectively alone
Managing distractions…
…and sustaining concentration
Capitalising:
Using resources purposefully
Making links…
…and recognising relevance
Perseverance:
Overcoming frustration and difficulty
Planning…
…your learning in advance

6. So how do all of these devices work together…
So how do all of these devices work together…? How does the computer actually work?

7. The CPU, RAM and I/O Devices
Double Click Icon to Open Program.
2. CPU sends request for program to be loaded from hard drive onto the RAM.
1. Instruction to open program sent to the CPU.
3. Hard drive loads program onto the RAM.
CPU now ready to work with the program!

8. The Office Desk Comparison
When you open a program on your computer, you send a message to the CPU (brain of the computer) to deal with the request.
The CPU will look for the program on the hard disk – imagine this as the draws of a desk – long term storage.
It will then take the program and load it on the RAM – imagine this as the desktop – the program is now ready to use.
Hard
Drive

9. The CPU, RAM and I/O Devices
Type a letter when ‘Word’ is open.
1. Instruction to display letter is sent to the CPU.
2. CPU asks RAM for instructions on how to display a letter.
3. RAM sends program instructions onto CPU.
6. CPU instructs Monitor to display a letter on the screen.

10. The Office Desk Comparison
When you are using a program, you use an input device (keyboard, mouse, etc.)
If you click on a menu (for example) you are sending to the CPU your request to see the menu.
The CPU will ask the RAM for the program’s instructions on how to display the menu.
When the CPU receives the instructions, it will then be able to process them and send a message to the monitor to update the screen with the menu showing.
Hard
Drive

11. Your Main Task Today Remind yourself of your target level…
…based on your target level you must pick an appropriate task.
RULES
If your target level is a level 3 or a 4, you can pick any worksheet
If your target level is a level 5 or 6, you can only pick worksheet 2
REMEMBER – using the appropriate Learning Habits will help you with this task
Choice of tasks on next slides…

12. Task – Complete the appropriate worksheet
Target Level 3/4 Expectation
Open and Complete the L3-4 Worksheet.
Use the presentation to help you!
Open and Complete the L5-6 Worksheet.
Target Level 5/6 Expectation