Implementación de un prototipo de sistema de autoservicio basado en microcontroladores para supermercados.

Abstract

The present document details the design and contruction of a self-checkout machine; this prototype allows costumers to scan and pay by themselves their grocery products. In order to produce this system, programming skills were necessary as well as selection of appropriate hardware. Once the article is scanned by the barcode scanner, the costumer must place the product on the scale, a data base is opened and the program compares the article weight against the data base article weight. The habitual workflow of the program is achieved only if the article weight is similar to the data base article weight; otherwise, the program insists to the costumer on placing on the scale only the products which were scanned.