How does a computer work?
  • A computer works using programmes which are lists of instructions it needs to follow to complete a task.
  • You use different programmes to do different jobs like writing a letter in a word programme and painting a picture in a drawing programme.
  • A computer has a CPU, a central processing unit that works a bit like your brain. The CPU sends and receives messages.
  • When you use the keyboard or the computer mouse youíre sending a message to the CPU and the CPU passes that message onto different parts of the computer, telling what you want it to do.
  Did You Know?
  • Computers canít think for themselves, they have to follow a programme telling it what to do.
  • There are computers in just about everything. From washing machines to microwaves, cars to television sets.
Be a Programmer

What you do:
Make a programme for a member of or family or for a friend. Make it a detailed step-by-step programme for them to follow, just like a computer would. Remind them that they need to follow the instructions like a computer and that computers canít think for themselves - they have to follow the instructions completely. Maybe you could give your friend or family member a list of instructions on brushing their teeth butÖ leave something out (like putting the toothpaste on the brush) or put something extra in (like whistling while they brush) and thatís the way they'll have to brush their teeth!
How many things in your house use a computer? Some of your big electrical appliances will but how about some of the smaller ones?

Make some kiwi biscuits Make some kiwi biscuits like the "Suzy Computer" did. Input the data by reading the recipe. Youíre the computer working with a programme while you make the biscuits and your output is the end result - cooked biscuits. And then I guess you get to input again by eating the biscuits!!

What you need:
150 grams of flour
1 cup sugar
2 eggs
2 cups flour
2 tablespoons of golden syrup
1 teaspoon of baking powder
1 cup of rolled oats

What you do:
Get an adult to help you, especially when you take the biscuits out of the oven. Cream the butter and sugar. Then add the eggs and golden syrup and mix again. Sift in the baking powder and flour and mix them in then add the rolled oats and give it another good stir.
Put tablespoonfuls of the mixture onto a baking tray and cook the biscuits for about 25 minutes on 180 degrees Celsius.
What did one computer say to the other?
Have you got any dip to go with your chip?

What mouse doesn't eat cheese?
A computer mouse
From K Edwards
Why was the computer so tired when it got home?
Because it had a hard drive!
Where are computers kept at school?
On their floppy desks
From Ashley and Georgia Seales

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