Which statement most accurately describes the purpose of a sensor acting as an input device in a computer-controlled greenhouse system?

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Question

Which statement most accurately describes the purpose of a sensor acting as an input device in a computer-controlled greenhouse system?

Accepted Answer

It measures physical quantities and converts them into electrical signals for processing — A sensor is a transducer that detects a physical quantity (such as temperature, light, or humidity) and converts it into a corresponding analogue electrical signal that can be input to the computer system for processing, making B correct. Option A describes an actuator or output device, not an input sensor. Option C describes a storage or database function. Option D describes the role of a display output device.

Answer

It stores data about environmental conditions in a database

Answer

It converts digital signals into physical changes in the environment

Answer

It displays current temperature readings on an output screen

Answer

It measures physical quantities and converts them into electrical signals for processing

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