5.0

How many different things did you count? In what ways might computer be used to control different things in the supermarket?
-5 things

-CCTV
- CREDIT CARD
-List the things in super market in computer
-calculate

Why is it useful to use computers rather than people to control things? What problems might there be if any of the computer system fail in the supermarket?
-Computer can do what people cannot do, it can calculate things quickly

If any of the computer system fail in the supermarket it will be very difficult
It can not calculate things

Describe the inputs and outputs for the other devices that we have talked about so far. How do the supermarket doors and car park barriers know when too open?
- It opens by our body temperature
Identify other control systems that work automatically in this way
- Some of the toilet waters automatically comes out

What would happen if the instructions were wrong?
The car would be made wrong
These instructions assume that the car were not there? How could they stop this happening
Make the machine stop if the car is not there ( just like the auto door)