DP Computer Science Questionbank

Explain how the system makes use of the data it receives from the sensors to determine when to switch the lights on.

Outline how the system will prevent the lights from being switched off too quickly when it thinks the room is unoccupied.

State two types of sensor that are required to control the lighting to ensure it switches on when it is required.

Outline the function of an output transducer.

Identify two benefits of using a digital camera as an input device in this control system.

Outline the use of a microprocessor in this control system.

Compare a centrally controlled system with the system described above.

Explain the environmental benefit of using a computer control system to monitor the pipeline.

Explain the relationship between sensors, output transducers and processor in this situation.

A washing machine uses a control system.

The microprocessor controls the washing machine and its actions. To complete the wash and rinse process the user selects the program, loads the washing machine and pushes the start button.

Describe the interaction between the sensors, microprocessors and output transducers in this situation.

Outline how sensors can be used in combination with GPS to provide more accurate arrival data.

State one data item concerning the arrival of a train that may be provided on the video display.

Explain how GPS works.

Discuss the advantages and disadvantages of using GPS in transportation systems.

Outline two pieces of information that the ATrainAway application could provide to the user.

Outline one feature of autonomous agents.

Explain the function of an output transducer in this situation.

Identify one alternative computerized method that could be used in place of the swipe-card readers.

Describe two types of sensors used in the floor-cleaning robots.

Describe how the method identified in (c)(i) functions.

Describe two hardware components that would be an essential part of this control system.

Explain the concept of feedback, with respect to computer control systems in general.

The home owner has also installed a control system that waters the flowerbeds in the garden. This system aims to maintain the water content of the flowerbeds between a minimum and a maximum value. However, the system is only activated when the light intensity is below a certain level.

Outline the algorithm involved in controlling the watering system described above.

The developers of the smart home system are considering developing a smart home system that uses a distributed control system to manage the temperature.

Contrast the use of a distributed air conditioning system with a centralized air conditioning system for maintaining a constant temperature in the smart home.

Explain how sensors and microprocessors are used to ensure that the air conditioning system is able to maintain a constant temperature in the smart house.

Explain one ethical concern that must be considered in the development of autonomous vehicles.

State one input device used by the automated headlights.

Explain how the interaction between the inputs, processing and the outputs of the feedback loop ensure the car stays the same distance away from the car in front.

Discuss the use of centralized and decentralized processing in the context of control systems such as those involved in the operation of motor vehicles.