COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An reading device that uses laser beams to read bar codes by using lights patterns that pass through the bar code lines.
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A reading device that uses a light source to read characters, marks and codes and then converts them into digital data that a computer can process.
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A reading device that uses radio signals to communicate with a tag placed in or attached to an object, an animal or a person.
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A reading device that reads magnetic stripes on the back of cards.
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A reading device that reads text printed with magnetized ink.
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Detailed explanation-1: -Abbreviated OCR, optical character recognition devices also use a light source to read special characters and convert them into electrical signals to be sent to the central processing unit.
Detailed explanation-2: -OCR stands for “Optical Character Recognition.” It is a technology that recognizes text within a digital image. It is commonly used to recognize text in scanned documents and images. OCR software can be used to convert a physical paper document, or an image into an accessible electronic version with text.
Detailed explanation-3: -An optical scanner, usually called a scanner, is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can process.
Detailed explanation-4: -An image scanner-often abbreviated to just scanner-is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Commonly used in offices are variations of the desktop flatbed scanner where the document is placed on a glass window for scanning.
Detailed explanation-5: -Optical Character Recognition (OCR) is the process that converts an image of text into a machine-readable text format. For example, if you scan a form or a receipt, your computer saves the scan as an image file.