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Various Types of Barcode Scanners.

Another name for a barcode scanner is a barcode reader. It is an electronic machine that is used in reading codes that are not visual to identify a commodity. A barcode is a number that can only be read electronically so that it can reveal the identity of a product. The barcode reader has a light source which has a sensor and also has a lens that is responsible for interpreting visual impulses into electronic ones. This device has a decoder circuitry that analyzes the code image provided by the sensor and eventually sends that code’s content to the scanner output port. most of this equipment are in supermarkets and are used to recognize goods and also determine their charges.

There are many types of bar-code readers and can only be distinguished by their housing design. A handheld scanner is a device that has a handle and also consists of a starting button that is started when passing through the barcode. The another example is a pen scanner that is similar to a pen but can be swiped through a barcode. Stationery scanner is mounted on top of a table, and hence the code is passed under or beside it. You can get a stationary scanner in supermarkets.
Fixed-position reader is a gadget that is found in industries, and it is used when the goods are being processed. In most cases, this gadget, is passed over the parcels so as to identify the commodities that are inside before taking then in a shipping place. There is the same kind of device that has a holographic scanner and an application to weigh and it examines the weight of the commodity. These systems are mainly used in factories for excellent shipping and supervision.

Another the gadget is a PDA that has an inbuilt barcode reader. Automatic a barcode reader is a device that is found in offices, and it reads the documents codes at a very high speed. A cordless reader is a barcode reader that has a battery fixed to it, and it is attached to a computer where it sends the information.

Barcode readers vary with technology and therefore, there are those that are more advanced than others. A pen-type reader has a source of light and a photodiode against each other. You hold the pen and go through the system using the same speed. The photo-diode create a waveform that will determine the breadth of the bar-code and also the area linking the numerical.

A laser reader uses a light source as the pen-type reader. It could also utilize a bar-code that scans through a light source through the code.

Source: http://urbangeekz.com/2016/06/tech-retail-companies-adopt-sooner-rather-later/