COMPUTER HARDWARE
INPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What can a scanner scan?
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Both picture and text
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Neither picture nor text
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Text
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Picture
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Explanation:
Detailed explanation-1: -A scanner is a device that captures images from photographic prints, posters, magazine pages and similar sources for computer editing and display. Scanners work by converting the image on the document into digital information that can be stored on a computer through optical character recognition (OCR).
Detailed explanation-2: -The light strikes the image, reflects, and is then reflected by a series of mirrors to the scanner lens. The light passes through the scanner lens and reaches the CCD sensors. CCD sensors measure the amount of light reflected through the image and converts the light to an analog voltage.
There is 1 question to complete.