Hardware lesson 3

• Computing
• Lower Secondary (Key Stage 3)

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Name the following devices.

Extension: Are they input or output devices? and why.

Do Now answers

Lesson 3: What's inside a Computer?

Year 9 – Introduction to Computer Hardware

Lesson objectives 

Conquer: Understand that a computer is made up of a range of components.

Aspire: List a range of components that are found in a computer and explain their function.

Hardware components guide 

• You are going to create a guide of all the hardware components we use inside of a computer.

• This guide will contain information about what each part does along with images for reader to look at.
  

 

ROM

• ROM stands for Read Only Memory
  

• ROM stores all the information we need to start the computer, such as the operating system.
  

• This is ROM, it’s a small chip attached to the motherboard.
  

                          

 

Link to Powerpoint

• Slide 4 should have the title “ROM”

Task 1: Find an image of the ROM and place onto the ROM slide.

Task 2: State what ROM is short for and what it does.

Extension: Research what happens if we delete data from ROM

If students finish the 2 tasks and the extension, ask them to design their hardware guide, or a cover slide to introduce it., 

RAM (Random Access Memory) 

• Every program that is being run by the computer (such as Google Chrome, Spotify or Microsoft Word) is stored in RAM.
  

RAM is volatile, Data is lost when turned off. This is why you lose work when you computer is turned of without saving. 

Hardware components guide 

Slide 4 should have the title “RAM”

Task 1: Find an image of RAM and place onto the RAM slide.

Task 2: State what RAM does.

Extension: Research what happens when RAM get full of too many programs. 

Fans

• Its very important that when the PC is running we keep everything cool.
  

• Most fans come with a remote to alter their speed, but this can be automatically done by the computer as it detects the temperature rising.
  

Hardware components guide 

Slide 5 should have the title “Fans”

Task 1: Find an image of a computer fan and place onto the fan slide.

Task 2: State what a fan is used for.

Extension: What happens to the computer if parts get to hot?

Sort the pc parts from the input and output devices. 

Computer parts

Input/Output device.

The purpose of the graphics card is to ...

1. To handle instructions
2. To store data.
3. To connect all the parts together.
4. Display of graphics to the screen.

CPU stands for

1. Computer processing unit
2. Central processing unit
3. Computational part unit
4. Central part unit

The purpose of the motherboard is to ...

1. To handle instructions
2. To store data.
3. To connect all the parts together.
4. Display of graphics to the screen.

The purpose of the fans are to ...

1. Cool the parts of the computer
2. Light up the computer
3. Link all the parts together.
4. Display of graphics to the screen.

The purpose of RAM is to ...

1. Cool the parts of the computer
2. Store information needed to start the PC
3. Store all open programs
4. Display of graphics to the screen.

The purpose of ROM is to ...

1. Cool the parts of the computer
2. Store information needed to start the PC
3. Store all open programs
4. Display of graphics to the screen.