www.computerscienceuk.com activity 1 5 minutes on your white boards explain the role of the...

www.computerscienceuk.com

Activity 15 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)


Activity 15 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.


How it all works?

Introduction to Computer Hardware


Lesson ObjectivesLesson 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 WordsCPU 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


Learning Habits

Collaboration:Working effectively with others

Listening……to understand

Empathising……with feelings and views

Imitation:Picking up good habits from othersIndependence:

Working effectively alone

Questioning:Asking questions to get below the surface

Making links……and recognising relevance

Imagining……how things could be and seeing a range of possibilities

Reasoning:Thinking rigorously, methodically and giving explanations.

Capitalising:Using resources purposefully

Managing distractions……and sustaining concentration

Effective use of time

Noticing details

Perseverance:Overcoming frustration and difficulty

Planning……your learning in advance

Adapting :Reflecting and making changes

Meta Learning:Talking about how you have been learning

Distilling……what you have learnt and what you need to learn

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?

WBs


So how do all of these devices work together…?

How does the computer actually work?


The CPU, RAM and I/O Devices

1. Instruction to open program sent to the CPU.

2. CPU sends request for program to be loaded from hard drive onto the RAM.

3. Hard drive loads program onto the RAM.

CPU now ready to work with the program!

Double Click Icon to Open Program.


The Office Desk Comparison

HardDrive

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.


The CPU, RAM and I/O Devices

1. Instruction to display letter is sent to the CPU.

3. RAM sends program instructions onto CPU.

2. CPU asks RAM for instructions on how to display a letter.

6. CPU instructs Monitor to display a letter on the screen.

Type a letter when ‘Word’ is open.


The Office Desk ComparisonWhen 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.

HardDrive


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…


Task – Complete the appropriate worksheet

1) Open and Complete the L3-4 Worksheet.Use the presentation to help you!

2) Open and Complete the L5-6 Worksheet.Use the presentation to help you!

Target Level 3/4 Expectation

Target Level 5/6 Expectation

www.computerscienceuk.com activity 1 5 minutes on your white boards explain the role of the...

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