5.0 Case Study

Q1: How Many Different things did you count? What were they? In what ways might computers be used to control different things in the supermarket?

A: I counted 6 things that are controlled by computers:  microwave, Satellite navigation system , Credit Card, Car Park Barrier, parking sensors and finally robots to make cars. Computers in the supermarket can control cashier, CCTV Cameras, Stock records, Scanners and anti theft device.

Q2: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?

A: Its useful for computers to control for things for us because it saves labor costs. Its financially better. Its more accurate to do things than us. It can keep a big memory and give a good analysis. It has no geographic limitations and the computers can be linked up. If the computer systems fail, we have to work harder, we have to do many things manually. This means huge rise in labor costs.

Q3: Describe the input and outputs for the other devices that we have talked about so far. How do the supermarket doors and car park barriers know how to open ? Identify other control systems that work automatically this way.

A:  First the Supermarket Door system starts then it will carry out instructions what to do and then follows instructions and stops after this. Car park barriers know when to open when you press the button and on the way out you put a ticket to a slot that lets it open. Supermarket doors know when to open with a sensor, when something or someone obstructs the area of the sensor, it opens. Soap Dispenser, Automatic water taps, Coffee stations and Rice Cooker work automatically this way.

Q4: 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 would they stop this from happening?

A: If the instructions were wrong, the production will halt, many wind screens would be broken and that means Mike might be fired from the company. If the car isn't there, like I said many wind screens would be broken. They could stop this from happening by putting a sensor.

ICT Reflection

In the school year of 2011-2012, in the ICT lessons, I have learnt a lot of different things in computer. I have learnt how to keep and storage with the data which all help me with different things, and I learnt how to sort and classify groups in Microsoft Excel. And I lot how to use different graphs in Excel, how to present presentation better to people in Microsoft Powerpoint  and how to do different things in Microsoft word. And last, I learnt how to draw a flow chart and calculate calculations in Excel.

4.0 modeling

1) How could Mussie and Elli find out whether older people do more for charity than younger people?
They can do street interview, chat online system (e.g. Facebook), asking teacher and classmates at school, interview old age home, etc.

2) Why does Mussie think that these data prove him? Why might Ellie think that these data do not him right?
For Ellie answer is that the information might be not true.
For Mussie answer is that the data has shown him the acceptable answer.

3) What question should they ask?
• Who are you?
• How often do you donate money to the charity?
• What types of charity do you donate to?
• How much money do you donate to the charity usually?
• Do you do charity work?
– If yes: How long do you spend time doing in charity events?

4) How many questionnaires should they hand out? Who do you think should fill in their questionnaire?
I think they should hand out 45 copies first, and if it went out within the first 3 to 4 days. I think the next time they reprint should be 53 copies. Also this questionnaires are every one (but not for the babies, because they will not understand a word if he/she receive the question sheet).

Q5: WHICH SOFTWARE COULD MUSSIE AND ELLIE USE TO PUT ANSWERS INTO THE COMPUTER? HOW CAN THEY CHECK THAT THE DATA ARE CORRECT? HOW COULD THEY REDUCE THE NUMBER OF ERRORS IN THE DATA? WHAT PROBLEMS MIGHT BE IF THE DATA IF TYPED INCORRECTLY?

ANSWER: THEY COULD USE EXCEL TO PUT THE ANSWERS IN. THEY'LL CHECK THE DATA BEFORE PUTTING IT ONTO THE SPREADSHEET. THEY RESTRICT THE COMPUTER TO THEMSELVES BECAUSE IF THE DATA WAS TYPED INCORRECTLY, THEY MIGHT GO INTO THE WRONG CONCLUSION.

Q6: WHAT IS THE BEST WAY FOR ELLIE AND MUSSIE TO PRESENT THE RESULTS?

ANSWER: THEY CAN USE A PIE CHART TO SHOW THEIR RESULTS IN PERCENTAGE

Module 3 questions

1. Q: What might be the diferences between a computer system set up for gaming compared to one set up for a business to use? Think about the different softwares may be needed.

1. A:Business people needs to create and print a lot of documents, other people wants very expensive systems that they could use for gaming.So the business people mostly needs Microsoft word, Powerpoint, office...... And, other people for gaming mostly needs a dvd drive to put disc to play and go on to the internet explorer to download or play games.

2. Q: Earl has 800 dollars to spend. How can Shaheen work out of he got enough money? What if he hasn't got enough? What methods could Shaheen use to help her work out to the prices of these diferent options?

2. A:Shaheen decides to set up a spreadsheet to help Earl. Shaheen uses a formula to add up all the prices of all the items. She includes a cell where she can type in how much the customer has got to spend and adds another formula to work out whether the customer has got enought money.

3. Q:What does Shaheen need to do to this spredsheet modelso that is ready to use?

3. A:Shaheen at last adds up the title and some text labels and formats the spread sheet tomake it clear and easy for use.

4. Q:How can Shaheen use the spread sheet model to help her with the new customer? What changes might she need to make to her spreadsheet model?

4. A:Shaheen needs to change the tower's name and the price of the tower in the spreadsheet.

5. Q:How else could Shaheen present this information to make it easier to read?

5. A:Change it into a graph