Transponder vs. Transducer

Transpondernoun

A radio or radar transceiver that transmits some signal in response to receiving a predetermined signal

Transpondernoun

electrical device designed to receive a specific signal and automatically transmit a specific reply

Transponder

In telecommunication, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a portmanteau of transmitter and responder.

Transducernoun

A device that converts energy from one form into another.

Transducernoun

(computing theory) A state machine that generates output based on a given input.

Transducernoun

an electrical device that converts one form of energy into another

Transducer

A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another.Transducers are often employed at the boundaries of automation, measurement, and control systems, where electrical signals are converted to and from other physical quantities (energy, force, torque, light, motion, position, etc.).