In order to realize this document's readers, the grocery store EL DORADO, target implementation store, for this bachelor degree aspiration work. EL DORADO is offering to its customers a wide kind of products ‘first need' mainly, featuring reasonable prices and a quick and agile attention, due mainly by using informatic POS systems, for five years ago. Since then EL DORADO has purchased two different POS of which have founded several issues related with the ease of use in such critical system forms, an automation left on repetitive task and a left or nonexistent to data system in order to exploit, migrate or leverage it. For that reason, has decide to focus this bachelor degree work, that in conjunction with an analysis, requirements engineering, software architecture, development methodology and lastly software development, to produce one POS system with the advantages that solve the above issue related Developing this project, it will acquire the require skills to identify such issues at business process systems, showing abilities on planning and solving to these kind of issues, all of this supported by self for a framework. As bottom line, we procced to ask ourselves: ¿we make the difference, when we design, developing and implementing a POS system with advantages on its functionality, open to data exploit and connectivity, using computer algorithm programs aside highly usable forms to make automation and ease use of repeated task for a wide kind of business like EL DORADO, grocery stores, small retailers and so on small business.