Q. how many different things did you count? What were they? In what ways might computers be used control different things in the supermarket?
A:.I count 5 different things, microwave, car, credit card, computher ,light
Q. Why is it useful to use computers rather than people to control things ?What problems might there be if any of the computer systems fail in the supermarket?
A:computer is more faster then hand ,,,,,if the computer have problems they need to ues there hands and it will be son slow,.
Q. 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 to open? Identify other control systems that work automatically in this way .
A:inputs- use a buttons or keypads of some sort as a way
output- description
Q. What would happen if the instructions were wrong? These instructions assume that the car is in the right place. What would happen if the car were not there? How could they stop this happening?
A: It will make the car become crazy.It will distroie everthing in there.distroie the car.
