APPLICATIONS OF LASERS IN BARCODE READER

[Audio] Physics video assignment topic: applications of lasers in barcode reader.

[Audio] What is bar code scanner? A barcode scanner is a device that can read and interpret barcodes The barcode scanner then decodes the barcode and sends the information to a computer or other device Barcodes scanners are commonly used in retail settings to scan products at checkout..

[Audio] It's mechanism A bar code consists of white and black bars. Reflections are strong in white areas and weak in black areas. The analog signal is converted into digital signal via an A/D converter..

[Audio] Construction 1) laser source 2)rotating mirror 3) lenses 4)optical detector 5)programmable microprocesser.

[Audio] Laser method of scanning Using laser allows reading of distant and wide bar code labels.

[Audio] Advantages It is a technology that is accepted universally Has the ability in tracking data so that better decisions can be made Disadvantages Barcode technology is a cost worthy process and the number of mis-reads are too high It cannot read 2D codes.

CONCLUSION. Laser barcode scanners use a visible and repetitive flashing laser light beam, commonly used to track inventory and to purchases into a computerised management system. Barcodes are used as a mode of quick identification. They provide better accuracy, traceability and sorting abilities than relying on manually entered data . The laser barcode scanner may be safe for most humans ’ eyesight but exceptions are always a possibility!.

[Audio] Thank you.. THANK YOU.