A 1.3.4 Worksheet Answers
Task 1. 1–C, 2–E, 3–A, 4–B, 5–D, 6–F. Task 2. a) Smoke alarm: interrupts. The event is rare and unpredictable but must be responded to instantly, so polling would waste effort and risk missing the moment; low latency is what matters. b) Factory temperature sensor, once a second on mains: polling is justified. The event is regular and predictable and there is no power constraint, so simple scheduled checking is enough...