SISTEM PENDUKUNG KEPUTUSAN PERAMALAN PENJUALAN LAPTOP DI TRIPIO COMPUTER MENGGUNAKAN METODE TREND MOMENT

The sale of laptops in Tripio Computer is still experiencing fluctuating where the stock of existing goods is greater than the sales and vice versa. In sales activities, sale forecasting is part of a decision-making process to determine the amount of stock of a product and is the initial step of the sales planning and control process. The purpose of this study is to make a sale forecasting application using trend moment method that is expected to facilitate shop owner to predict laptop sales for decision making in planning laptop sales every month. System development method used in application is waterfall method with system design in the form of UML (Unified Modeling Language). Meanwhile, the database design uses ERD (Entity Relationship Diagram). This is a web-based application. The programming languages used are PHP (Hypertext Preprocessor), HTML (Hypertext Markup Language), JavaScript and for web server uses APACHE XAMPP. From blackbox testing namely functional testing, it can be concluded that the application of laptop sales forecasting has been successfully run well. The result of questionnaires with UAT (User Acceptance Testing) is 96.1% belong to the criteria of the results strongly agree. In other words, the apllication of laptop sale forecasting is worth using.