A hand-held device which reads marks or characters on paper by detecting photo-sensitivity is known as Options: A . &nbspLight pen B . &nbspOptical-wand C . &nbspPlotter D . &nbspAll of the above E . &nbspNone of the above

A hand-held device which reads marks or characters on paper by detecting photo-s

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A hand-held device which reads marks or characters on paper by detecting photo-sensitivity is known as

Answer: Option B

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