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SAW expanded as?

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SAW expanded as?

(a) Surface Arrangement Wave

(b) Screen Acoustic Wave

(c) Screen Arrangement Wave

(d) Surface Acoustic Wave

This question was addressed to me during an interview.

This intriguing question originated from Touch Sensor in chapter Sensors of IOT

1 Answer

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Right choice is (d) Surface Acoustic Wave

For explanation I would say: SAW touch screen technology is based upon two transducers and a reflector placed on the glass surface. The wave is dispersed across the screen by bouncing off the reflector arrangement and received by the transducers.

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