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Logic gate learning is a fundamental topic in digital electronics; however, the learning process is often delivered theoretically with limited visualization of logic gate operations, making it difficult for students to understand the concepts. This study aims to design and develop an Augmented Reality (AR)-based learning media using a markerless approach with the 3D Object Tracking technique on Android devices. The application was developed using the Multimedia Development Life Cycle (MDLC) method, which consists of the stages of concept, design, material collection, development, testing, and distribution. The developed application provides three-dimensional visualization of logic gates, learning materials, interactive simulations, and quizzes. The application quality was evaluated based on the ISO/IEC 25010 standard, covering the aspects of Functional Suitability, Performance Efficiency, Usability, Compatibility, and Portability. The evaluation results showed that the application achieved a score of 100% in the Functional Suitability, Performance Efficiency, Compatibility, and Portability aspects. Meanwhile, the Usability evaluation obtained scores of 86,6% from respondents who had not previously studied logic gates and 89% from those who had, indicating that the application is categorized as highly feasible. Therefore, the developed markerless Augmented Reality-based learning media can serve as an interactive, engaging, and effective learning alternative for improving students' understanding of logic gate concepts.

Inventory Information System is an information technology-based system that aims to assist organizations or institutions in managing and monitoring inventory more efficiently and provides an overview of the inventory information system, the main focus of its development, and the expected benefits of implementing this system. Using a manual system for each product written with a book, of course, is not efficient can result in  inventory data easily lost and damaged, easy to occur errors or data loss.  To overcome the occurrence of these problems is there is a web-based inventory information system application to solve the occurrence of errors that are often found in the world of work. Based on the results obtained This research can overcome the problem of data loss, data errors, with the help of this information system can help solve problems that often occur. This information system is made according to the needs of the White Elephant University efficiently and accurately.