Past Paper Questions. Chapter 6 ICT Applications

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1 Past Paper Questions Chapter 6 ICT Applications Q 1. A microprocessor in a greenhouse causes fans to come on when the temperature is higher than the preset value and switches them off when it is lower. It also keeps a record of the temperature throughout the day. Name two types of application software which are being used. a)... b)... Q 2. All the sides are the same length. The turtle is facing up the page and the pen is up. Complete the set of instructions to draw this shape by filling in the blank lines, and using the REPEAT instruction. RIGHT Q 3. Some students are studying the amount of pollution in a river. They are using a computer to measure the pollution using sensors. The results are recorded and printed. (a) Name two sensors they should use to measure the amount of pollution [2] (b) Explain why this is not an example of computer control. 1 P a g e

2 [2] (c) Name a type of software which would be used to store the results.... [1] (d) Name a type of software which would be used to produce a report incorporating graphs.... [1] (e) Describe the steps involved in monitoring the pollution..... [4] Q4. A hospital s intensive care department uses a computer to monitor patients conditions. Give three advantages of using a computer to collect the data rather than having it done by nurses P a g e

3 Q 5. Complete the set of instructions to draw this shape by filling in the blank lines. The turtle is facing up at the start. PEN DOWN... FORWARD FORWARD FORWARD 25 FORWARD 30 RIGHT 90 RIGHT90... Q 6. Complete the set of instructions to draw this shape by filling in the blank lines. You will need to use a REPEAT loop after the turtle has moved the 70 mm. PEN DOWN FORWARD 20 LEFT 90 RIGHT 90 FORWARD RIGHT RIGHT FORWARD P a g e

4 Q 7. A meal is to be cooked using a microprocessor controlled oven. (a) Identify two variables which have to be pre-set before the cooking begins [2] (b) Describe the role of the microprocessor in controlling the oven....[5] Q 8. A car manufacturer uses robots on its production line. (a) Describe four disadvantages to the company of using robots to build cars [4] (b) Identify two changes to the workers working environment that the use of robots has brought about P a g e

5 ...[2] Q 9. The use of microprocessor-controlled devices in the home affects an individual s leisure time, social interaction and the need to leave the home. (a) Give three advantages to the individual when microprocessor-controlled devices are used in the home... 3 (b) Give three disadvantages to the individual when microprocessor-controlled devices are used in the home... 3 Q 10. Identify two devices which are used in control systems to output data. 2...[2] Q 11. Complete the set of instructions to draw this shape by filling in the blank lines. The turtle is facing up at the start. 5 P a g e

6 PENDOWN LEFT FORWARD Q 12. Many homes in cold climate areas use microprocessor controlled central heating systems. (a) Name two input devices used in such a system. Input device 1.. Input device 2.. [2] [6] (b) Describe the processing which takes place. 6 P a g e

7 Q 13. The Geography teacher in a school has set up an automatic weather station connected to a computer. (a) Name three physical variables which will be measured by sensors (b) (i) Explain why the computer is unable to read the data directly from the sensors. (ii) Name the device that is needed to enable it to do so. (c) Give three advantages to the Geography department of having a computerised weather system rather than a manual weather system... 3 Q 14. In science lessons, students use sensors connected to computers to find the boiling point of water. Give three advantages of using computers and sensors rather than students taking the temperature readings themselves... 7 P a g e

8 3 Q 15. A school is going to introduce an automatic registration system controlled by computer. Students will carry a card which will be read automatically by an input device every session so that the school office will know that they are present. (a) Name a suitable input device to read the card. (b) Instead of using this system the school ICT teacher suggests using student fingerprints. Describe two advantages and two disadvantages of such a system. Advantage Advantage Disadvantage Disadvantage Q 16. Describe the effects on people s lifestyles of the use of microprocessor-controlled devices in the home. 8 P a g e

9 Q 17. Describe the role of the microprocessor in an automatic washing machine. Q 18. A theatre has an on-line booking system. Customers can reserve seats using the Internet with a credit card. The theatre s computer keeps records of which seats are available. When the customer pays for a seat the theatre s computer communicates with the credit card company s computer. (a) Describe three checks that the credit card computer will make on the customer s credit card account... 3 (b) Describe the processing carried out by the theatre s computer when the credit card company s computer authorises the transaction. [4] 9 P a g e

10 Q 19. Complete the set of instructions to draw these regular shapes by filling in the blank lines. The turtle is facing up. PENDOWN PENUP LEFT 90 BACKWARD 120 REPEAT 5 FORWARD 50 FORWARD 60 END REPEAT [5] Q 20. Computer controlled traffic lights are used at busy road junctions. Light sensors and sound sensors are not used to measure traffic flow. (a) Giving a different reason for each, explain why these sensors are unsuitable. Sound Light....[2] (b) Explain the difference between measurement and control when using microprocessors [2] 10 P a g e

11 Q 21. Doctors use an expert system to help them with their diagnoses of illnesses. (a) The symptoms are typed in by the doctors. Describe the processing which the system uses so that it can suggest possible illnesses. [5] (b) Name two applications other than medical diagnosis and car fault diagnosis which involve the use of expert systems.....[2] 11 P a g e