COMPUTER FUNDAMENTALS

COMPUTER HARDWARE

INPUT DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a scanner used for?
A
To scan pictures and text
B
to scan pictures
C
to scan text
D
Can not scan a picture or a text
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: -scanner, also called optical scanner, computer input device that uses a light beam to scan codes, text, or graphic images directly into a computer or computer system.

Detailed explanation-3: -There are three types of scanners available: drum scanner, flatbed, and handheld scanners. The publishing industry primarily uses drum scanners to print high-quality images, while flatbed scanners are generally used in schools and offices. On the other hand, libraries and shopping malls make use of handheld scanners.

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