GCSE Design and Technology · key term

Feedback

Definition

Information about a system’s actual output or resulting condition that is returned to its controller to influence further operation.

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Component 1

Feedback returns information about the actual result to the controller. In a temperature-controlled room heater, a temperature sensor continually checks the room. When it is too cold, the controller switches the heater on; when the temperature rises above the chosen level, it switches the heater off.
Revise: Electronic Control Systems
Comments, observations or responses from other people that help a designer judge and improve a product.
Revise: Feedback and Modification

1
Feedback returns information to the controller so it can adjust the output. An LED that only informs the user is not necessarily part of a feedback loop.
2
Support each judgement with a specification criterion and evidence from testing or user feedback, rather than simply saying that the prototype is successful.
3
Explain why you accept, adapt or reject feedback. Responding thoughtfully does not mean following every suggestion.

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