Scanner is: description and functions of the device, purpose

There are many different devices for processing documentation, one of them is a scanner. A unique machine that can translate documentation from paper format to digital. Devices are widely used due to their indispensable functionality, which allows you to get an image of any object placed on a scanning surface.

What is

This is a special equipment that is designed to obtain a digital image of an object placed in such a device. The process of creating a digital image is called scanning. It can be attributed to devices and input and output information.

Device description

Scanners are very diverse and differ mainly not only in functionality but also in the nature of the processed objects. It usually looks like a box, under the lid is a glass surface.

Appointment what does

There are some of the most popular types of scanners. Each of them is needed for specific purposes:

1. For film - it processes the negative of a photo or slide, and is intended for the image processing process. Commonly used by people who deal with photography.
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2. Laser - designed for remote reading of special barcodes. Commonly used in stores for product labeling analysis. Also, this equipment allows you to make a 3-D projection of the object. It is usually used both in ordinary shops and in research centers for modeling.
3. Tame. This equipment is intended for manual scanning of small sections of text. Typically used for barcode analysis or scanning small documents.
4. Widescreen. They have an impressive size, and allow you to process large volumes of documentation. Typically, large-format scanning is used to digitize drawings, or technical documentation of non-standard formats. It is used both in various educational institutions, and in various high-tech industries.
5. Book or planetary. This device scans without contact with the object. Designed to digitize documents that have historical value, and contact with a scanning device can damage their integrity. It is used in museums or educational institutions.

Operating principle

A conventional scanner is a rectangular apparatus that has a hinged lid with a glass surface. It is on it that the document is placed. The system of mirrors and the optical analyzer are located inside and provide a clear readout of the shape, color and content of the scanned documentation. Depending on the model, the quality of the resulting image may vary.

Information from the reader is sent to the computer via a USB cable connected to the PC. The resulting image can be edited and saved using standard Windows tools.

REFERENCE! The choice of quality of the received image affects not only the clarity of the picture, but also the scanning speed. If detailed information is not a priority, then this parameter should be reduced so that the scanning process runs faster.