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Scanners

Scanner - Computer Hardware Concepts

Scanners - Computer Hardware Concepts

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Scanner

A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display. Scanners come in hand-held, feed-in, and flatbed types and for scanning black-and-white only, or color. Very high resolution scanners can be used if you need to print scanned image in high-resolution, but lower resolution scanners are adequate for capturing images for computer display. Scanners usually come with software, such as Adobe’s Photoshop product, that lets you resize and otherwise modify a captured image.

Drum Scanner, Flatbed Scanner and Hand Scanner are the three different types of scanners.

When it became possible to scan the images and pre-printed pages, the recognition technology emerged that can recognize the text and marks present on the scanned image and convert them into editable form. As per our syllabus we need to learn about OCR, OMR, BCR and MICR scanners. Following are different technology on the topic:

OMR Technology

The OMR technology allows user to read the check boxes – that is the sign affixed in predefined spaces. This technology can be extremely useful to automate the marking of exam papers of objective exams. Specialized software along with OMR can completely automate the checking, marking and tabulating the exam papers.

OMR technology

ICR Technology

With ICR technology it is possible to recognize manuscript data in unconstrained or constrained mode when there is usually space among characters. It can be used to entry the forms directly into the computer.

Handwritten text that ICR can recognize


BCR Technology

The BCR technology allows the recognition of bar codes printed on retail products, as well as, decoding their content. Image displays different bar codes that BCR can read.

Bar codes that BCR can read


OCR Technology

It’s the recognition technology for printed and typed texts. When you have any printed page and require it to edit on computer, this technology can be used to input the document into computer and create editable file.


OCR-A Technology

This technology works on pre-printed OCR-A code lines of postal and banking documents;


OCR-B Technology

This technology works on pre-printed OCR-B code lines of postal and banking documents;



MICR CMC7 – E13B Technology

MICR technology can be used to identify the text written by magnetic ink. Magnetic ink is a special type of ink that contains iron particles dissolved in ink. MICR magnetizes the writing and scan it accurately. It can be used to verify the signatures in bank checks.

MICR CMC7-E13B Technology works on pre-printed CMC7 or E13B check code lines.



MICR CMC7 – E13B Technology

MICR technology can be used to identify the text written by magnetic ink. Magnetic ink is a special type of ink that contains iron particles dissolved in ink. MICR magnetizes the writing and scan it accurately. It can be used to verify the signatures in bank checks.

MICR CMC7-E13B Technology works on pre-printed CMC7 or E13B check code lines.



CHR Technology

It allows user to read manuscript data in cursive written (natural writing not in capital letters): what was only imaginary a few years ago, now it’s real. This feature is essential for reading forms that haven’t been expressly designed for the automatic acquisition and contain unconstrained fields, freely written, without any tie.


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