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GCSE Design and Technology · key term
A diagram using labelled boxes and arrows to show the functions of parts of a system and the direction of signals between them.
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Component 1
Revise: Electronic Control SystemsA block diagram shows what each part does and how signals move between parts. Use labelled boxes and arrows pointing in the direction of signal flow. The heater diagram separates sensing, switching and output, with a return path showing how the result is sensed again.
Use standard symbols in circuit diagrams, labelled functional boxes in block diagrams, and labelled Yes/No branches from flowchart decisions.
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