상황
The diagram models the core software classes of a smart coffee maker, including physical components (water tank, bean container, grinder, heater), brewing control, IoT connectivity, and user personalization.
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Used composition for physical components
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Associated controller as singleton managing the coffee maker
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Linked IoT module via dependency for status monitoring
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Aggregated user profile with optional personalized settings
Suitable for IoT device software design requiring hardware abstraction, control logic, and cloud connectivity.