INTRODUCTION
Background of Study Dagupan Tipid Computer Center began its operation back in 2010, associated in Solis M.H Pilar Herrero Perez Dagupan City, Pangasinan. They had selling computers, laptops, including computer parts and some great offer like the piso net with complete accessories. In today’s generation, we are engaged in highly computerized technology aiming to enhance individual lifestyle and most especially in the world of business. The manual system is now considered obsolete after the birth of the computerized system. On-line transaction is now very common to widen the target market of the companies. It becomes more attractive to the clients considering it can save time and considered hassle-free. It is almost impossible to avoid using a computer; their nature basic nature is surprisingly simple. Their ability to perform so many simple tasks at such great speed and with such a high degree of accuracy is what makes computers useful. “One can think a computer as a clerk who does nothing all day but sit and perform trivial, routine tasks according to given sets of instructions, and who does with perfect accuracy, infinite patience, a flawless memory, and unimaginable speed (Savitch, 1989:3)” The most commonly used system by several companies is the sales system and inventory system creating a web-based system. Advanced system on sales provide more reliable recording of sales of the company with comparison to its actual cost. In addition, the data needed by the company to decide matters in relation to inventory can be easily generated. Moreover, the inventory system promotes effective inventory control which ensures stocking the in demand and correct items in the correct quantities. This system can help the company to avoid overstocking. When an organization overstocks, money is wasted since procuring, storing, and accounting for unneeded items require time, space, and money which could have been used on more