Different Examples Of Bar-code Readers.
A bar-code scanner is also referred to as a bar-code reader. It is a gadget that is utilized in reading a barcode that is written into a computer. A barcode is a system that can be interpreted by a machine in the form of numerals so that it can identify 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. The gadget has a decoder that evaluates the image of the barcode and takes the content in the output port. Most of these gadgets are found in supermarkets and are used in identifying the price of the commodities that a client buys.
There are several types of these devices, and therefore you can only distinguish using their design. The first example is a handheld reader that has a holder and a starting button that is used to switch the light source on and off when passing it through the commodity. The another example is a pen scanner that is similar to a pen but can be swiped through a barcode. A stationery scanner is a device that fixed on a table, and the barcode is then passed under it or beside it. The stationary reader is mostly found in supermarkets.
Fixed-position scanner is a device that is mostly used in factories and it is used in identifying products during manufacture. 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 devices are found in factories, and it ensures that is quality management and shipping.
A PDA is a machine that has a barcode reader inside it. An automatic reader is found in a back office, and it is used to read coded document in a very high speed. A cordless reader is also called wireless since it has a battery inside and does not operate using electricity, it is usually connected to a processer where it sends the data.
The barcode scanners are differentiated with the technology, and hence some are more developed than others. One is a pen-type scanner that has a light source and a photodiode together. When reading through the barcode, you keep the pen and run through the code with the same rate. 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 also make use of a rotating mirror to read the source of light across the bar-code.