A robot is used as a computerised postal delivery system. It drives around the corridors of a set of offices picking up and delivering post. If the robot is close to a worker it stops and waits until the worker moves away. A proximity sensor is used to detect how close to a worker the robot is. Describe the role of the microprocessor in stopping the robot. Robots are being used more and more in offices to carry out menial tasks, like delivering post. Describe the advantages and disadvantages of using robots in this way.

0417_w17_qp_12

THEORY

2017

Paper 1, Variant 2

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Modern supermarkets have automated stock control systems, which use data from the checkouts. Describe how food items can be ordered by an automated stock control system so they are delivered before the stock in the supermarket runs out.

0417_w18_qp_11

THEORY

2018

Paper 1, Variant 1

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State two benefits to a company of using robots on car production lines.

0417_w19_qp_11

THEORY

2019

Paper 1, Variant 1

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Chess players can use expert systems to help them practise chess moves. Name two other applications which involve the use of expert systems. 1 21

0417_m20_qp_12

THEORY

2020

Paper 1, Variant 2

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Expert systems are used by doctors. Describe how an expert system can be used to diagnose illnesses. Name two other applications of expert systems.

0417_s18_qp_11

THEORY

2018

Paper 1, Variant 1

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A library is considering the way it issues books. The librarians are planning to use RFID rather than bar codes. Describe the advantages of using RFID rather than bar codes.

0417_s22_qp_12

THEORY

2022

Paper 1, Variant 2

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For Examiner's Use 10 A school uses a computer-controlled greenhouse to grow plants. Name three sensors that would be used in the greenhouse. Describe the computer processing that is required to maintain the correct growing conditions. Describe three advantages of using computers rather than students to control the growing conditions.

0417_w11_qp_12

THEORY

2011

Paper 1, Variant 2

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For Examiner's Use A greenhouse is controlled by a microprocessor. Tick three physical variables that would be monitored.
Humidity Temperature Pressure Wind speed Light Wind direction Explain the difference between measurement and control. Give four advantages of using a computer rather than allowing the students to control the growing conditions.

0417_w12_qp_13

THEORY

2012

Paper 1, Variant 3

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A householder has installed a computer controlled burglar alarm. Describe the processing involved in a computer controlled burglar alarm.

0417_w16_qp_13

THEORY

2016

Paper 1, Variant 3

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A city hospital has decided to use emerging technology to automate its packaging and dispensing of medicines to patients. It has decided to use a robotic system which identifies the medicine using bar codes. Discuss the advantages and disadvantages to the hospital of using robots within this environment rather than using humans to carry out the task. The system currently uses bar codes to read the data on the medicine packets as well as the shelf that the medicine packets are located on. The hospital is considering using embedded RFID chips in the packaging rather than bar codes. Explain the advantages of using RFID chips in this scenario.

0417_w17_qp_11

THEORY

2017

Paper 1, Variant 1

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