- The definition of a sensor is a tool that is designed to detect something and then to respond by taking a specific action.
An example of a sensor is how a GPS picks up a signal and relays that information in the form of directions.
Origin of sensor; from Classical Latin sensus, past participle of sentire, sense + -or
- A device, such as a photoelectric cell, that receives and responds to a signal or stimulus.
- See sense organ.
sensor - Computer Definition
A device that measures or detects a real-world condition, such as motion, heat or light and converts the condition into an analog or digital representation. An optical sensor detects the intensity or brightness of light, or the intensity of red, green and blue for color systems. See smart sensor, sensor network and mote.