www.computerscienceuk.com activity 1 5 minutes on your white boards explain the role of the...
TRANSCRIPT
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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)
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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.
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How it all works?
Introduction to Computer Hardware
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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
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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
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So how do all of these devices work together…?
How does the computer actually work?
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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.
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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.
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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.
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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
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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…
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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