Output Devices in Product Design:
- Buzzers: Microwave end-of-cycle alerts (frequency modulation + sound waves)
- Speakers: Smart home voice assistants (audio signal processing + Fourier transforms)
- Lamps: Traffic signal systems (LED power efficiency + Ohm's Law)
- Combined Systems: Emergency alarms (synchronized light/sound patterns)
Design Principles:
- Permanent: Fire alarm systems (continuous monitoring)
- Temporary: Timer progress indicators (visual/audio countdowns)
- Situational: Accessibility cues (tactile paving with audible signals)
Topic test:
Interactive flashcards: