Scanning gun principle

Guide: Scanning gun, literally seems to be a relatively tall thing, but it is actually a kind of... What is it? Xiaobian will immediately explain the principle of scanning guns for you~

Scanning gun, the English name is Scanning Gun, a high-tech computer input device that integrates optical, mechanical, electronic, software and other technologies. It can directly input images, texts, etc. into the computer to realize its processing and management. Use, storage, output and other functions. Does it sound really high-tech? Next, Xiaobian reveals the answer to the question. The scanner is actually the machine that scans the barcode of the goods in the hands of the cashier at the checkout of the supermarket. Of course, the scanner does not only have this function. Down on the small series, the scanner is introduced mainly from the principle and application.

Second, the scanner - principle

The scanner is a barcode scanner, which is mainly composed of a transmitting device, a receiving device, a photoelectric conversion device, a decoding circuit and a computer interface. First, the light is emitted by the transmitting device, that is, the light source, to the barcode, the light is reflected on the barcode and the reflected light is received by the receiving device; secondly, the reflected light is converted into an electrical signal by the photoelectric conversion device, and passes through the decoding circuit. It is processed into a digital signal that can be directly accepted by the computer; finally, the digital signal is transmitted to the computer via a computer interface to complete the scanning and recognition process of the barcode.

In order to reduce people's workload and improve the accuracy of data, the use of bar codes is becoming more and more extensive. The express in the transportation industry, the bills in the administrative law enforcement industry, the tag in the footwear industry, the logo in the book industry, and even the power. Transcription of meter data in the industry... There are barcodes everywhere in life. Therefore, there are scanners everywhere in life. Maybe you haven’t felt it before. After reading this article, I believe that you will pay attention to these things in your life. I feel the deep sense of the scanner.