Essay On Barcode Scanners

The first use of barcodes scanners was to label railroad cars and also labeling Wrigley's Gum. The use of lasers and radiation allow barcode scanners to be able to work. This means waves are making this work because lasers are light waves and electromagnetic radiation waves are radio waves with wavelengths in the electromagnetic spectrum longer than infrared light. Both light and radiation waves of energy are called electromagnetic waves because they have oscillating electric and magnetic fields. People are trying to make barcode scanners more reliable by making the codes more readable not causing the scanner problems.

Barcode scanners are electro-optical systems. How they work is barcode scanners begin by illuminating the code with red light. The sensor of the barcode scanner detects the reflected light from the illumination system and generates an analog signal with varying voltage that represents the intensity of the reflection. The converter transforms the analog signal to a digital signal which is sent to the decoder. The decoder reads the digital signal, then does the math required to confirm and validate that the barcodes are analyzed.

The two types of barcode scanners are linear and 2D. The linear barcode is more common than the 2D. Barcodes are made up of the barcode and the 12-digit UPC number. The manufacturer's identification code

These scanners work because of electromagnetic waves, such as light and radiation waves. There are two main types of barcode scanners linear and 2D scanners. But a linear code scanner cannot scan a 2D code and vice versa. This works by the light waves sending a red light onto the barcode and the radiation waves process to see if it'll be able to scan. One limitation on these products is any dirt or dust interfering with the code can make it unreadable to the scanner. I learned a lot of barcode scanners and how waves make those