Sensor - Dictionary Definition and Overview

Sensor :  (noun)

1: any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner [syn: detector, sensing element]

Based on WordNet 2.0

Sensor : \Sen"sor\, a. Sensory; as, the sensor nerves.

Based on Webster's Revised Unabridged Dictionary

Sensor : 

An electronic device used to measure a physical quantity such as temperature, pressure or loudness and convert it into an electronic signal of some kind (e.g a voltage). Sensors are normally components of some larger electronic system such as a computer control and/or measurement system.

Analog sensors most often produce a voltage proportional to the measured quantity. The signal must be converted to digital form with a ADC before the CPU can process it.

Digital sensors most often use serial communication such as EIA-232 to return information directly to the controller or computer through a serial port.

(1997-04-15)



Based on Webster's Revised Unabridged Dictionary (1913)
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