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Keywords: Sensor
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Journal Articles
Library Hi Tech (2013) 31 (2): 236–253.
Published: 07 June 2013
... the best possible service for the convenience of its users. © Emerald Group Publishing Limited 2013 An optical sensor changes light into electrical signals by detecting the presence or absence of an object, whether it is large or small in size, and the shading of the object or its environment...

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