A CCD barcode scanner is an input device that uses light beams to scan and digitally convert printed barcodes. It then decodes the data and sends the data to a computer. It consists of a lens, a source of light, and a light sensor that can translate optical impulses into electrical signals. A laser barcode scanner contains a decoder that analyses the image data provided by the sensor and sends it to the output port. After scanning an image, it links to a host computer to pass along the captured information.

The decoder recognises the barcode symbols, translates the bar and space content, and transmits the data to a computer in such a format that we can read. The decoder can also drop data into Accel or Excel databases. Special application software can put that data into inventory records for monitoring the work-in-progress, or for receiving and sending files. It reduces the need for manual data collection and thereby helps mitigate chances of human error. It also quickens tasks such as managing assets, monitoring point-of-sale transactions, and tracking inventory.