7.2 Hardware 7.2.3 Inside the Computer Year 7 Computer Science @ Midhurst Rother College

STARTER: LEARNING CHECK Open your notes from last lesson (OneNote). Add 1 - 3 questions about storage devices to the front of your revision cards. Add your answers to the back of the cards. The teacher will select one student to ask a question and one other student to answer that question.

LEARNING OBJECTIVES Learn how the different parts of a computer work together. Be able to put suggest components needed to build a computer.

THINK WHILST YOU WATCH! What are the main components? What links all the components together?

INSIDE THE BOX In many ways we can compare a computer system to the human body. For example the power supply is the heart of the computer, without it there would be no life in the computer. The casing of the computer is like our skeleton. The case of the computer holds everything together and keeps each of the components in place. Similar to the way your skeleton keeps your body together!

THE BRAIN The processor is where the computer carries out of it’s tasks (processes) in a similar way to how your brain thinks about things. We will looking at the processor in more detail next lesson! Computers also have a motherboard, this is like our central nervous system and is used to connect and allow different components of the computer to communicate with each other.

MEMORY Like humans, computers have different types of memory. We have already looked at storage and the saving of apps and files for long term use. But computers also have two types of primary memory located close to its brain. RAM RAM is where the computer stores the current task that is being carried out. This is like when you are thinking about how to work out a sum in maths or what your are going to say next. ROM ROM contains the start up instructions for the computer, which can never be deleted. Without this memory your computer would not start!

YOUR TASK Open the worksheet in the Lesson 3 assignment from rother-net.co.uk. Remember to save the document into your files! All the components, descriptions and images you need are on the first page but they are completely messed up! Cut and paste them into the second page table but in the right order! Extension Research more information about the key components and add notes to your OneNote. COMPLETE ON WORD DOC PROVIDED 10MIN TASK

TASK REVIEW Did you complete the task? Did you put everything into the right order? We will go through the answers now. Make corrections in green pen.

TASK ANSWERS

TASK ANSWERS

BUILD A COMPUTER You now know all the key components that are needed for a computer to work. So now it is time to see if you can build one...

SHOPPING LIST TASK Component Why this one? Price Computer 1: Under £500 Component Why this one? Price COMPLETE IN YOUR ONENOTE

YOUR TASK Use the website links on rother-net and amazon to put together a shopping list for all the components you need to build a computer. Your budget for your first computer is £500 and your budget for your second computer is £1500. Write your shopping list in a table in your OneNote. EXTENSION: If money was no object, what would you build? Write your ideas in OneNote. COMPLETE IN YOUR ONENOTE 15MIN TASK

LEARNING CHECK Can you remember all of the key components from a computer? Go to kahoot.it and enter in the game pin. Kahoot - please enter your real name for the username! Score is based on scoring correct answers and speed of answers. Epraise points for the top three! Teacher link: https://play.kahoot.it/#/k/a94fe544-ab8e-4d09-af20-d1a2888206a2

NEXT LESSON We will look more closely at the ‘brains’ of a computer.