Question

a device used to convert human signal into electrical signal ​

Answer 1

Answer:

Electromechanical transducer, any type of device that either converts an electrical signal into sound waves (as in a loudspeaker) or converts a sound wave into an electrical signal (as in the microphone).

Explanation:

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Answer 2

→ 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.

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