Abstract-This research aimed to develop a digital instructional medium for the subject of Computer Assembly in vocational high schools. This learning medium is intended for the tenth-grade students of Informatics and Communication Engineering. The development process was conducted based on the ADDIE model, including analysis, design, development, implementation, and evaluation. The result of the development was a mobile application containing instructional materials about computer assembly. The app was created with the JQuery Mobile framework for mobile device optimisation. The developed application contains four main menu options, i.e. home, content, quiz, and help.

currently, the utilization of mobile phone technology is increasingly affordable by the community with various types of technology. Today, the development of mobile phone technology is still not maximized utilization in the process of spreading. Multimedia lesson is one of the main subjects that deal directly with the development of mobile phone technology. Limited teaching materials for subjects Introduction Multimedia becomes one of the obstacles for students in the learning process. This study aims to make learning media more user-friendly, flexible and easy to use for learning outside the classroom (Asynchronous). The research method used is the method Research & Development (R & D) uses a development model that is reduced to 3-D. The development of this medium used JQueryMobile framework that enables this teaching medium to run on various mobile devices. Research shows that: 1) mobile-based multimedia learning media proven to improve students' asynchronous learning in vocational high schools; 2) there are significant differences in learning outcomes between students using mobile-based multimedia learning media with students who do not use mobile-based multimedia learning media, and 3) mobile-based learning media proved to improve student learning outcomes.

Learning media is one component of learning that has an important role in the learning process. Good learning media can improve student's learning motivation. One of the good learning media is interactive learning media. Learning media makes students more active in the learning process because it not only presents the material but also provides feedback to students. This study aims to develop interactive learning media based mobile database and measure the level of effectiveness of the use of interactive learning media based on the mobile data base. This research uses the research method with ADDIE model which includes five stages: analysis, design, development or production, implementation or delivery, and evaluation. This study shows that: 1) interactive learning media based mobile database using framework7 feasible and has been by the standards. The material contained in it is the concept of a database, database structure, DDL, DML, DCL, and basic SQL; and 2) interactive learning media based mobile database using framework7 proved effective in improving student's learning outcomes in vocational high schools.