Digital Electronics 101 is an Android application that offers a comprehensive review of the basics of digital electronics. It provides multiple-choice questions with solutions and theory to help users refresh their knowledge in the field. The application is suitable for various professionals, including electrical trade apprentices, electrical journeyman, automotive technicians, electronic technicians, mechatronics technicians, electrical engineers, electronic engineers, and physics students.

The application is easy to navigate, and the questions are well-organized and cover a wide range of topics. The solutions to the questions are detailed and helpful, making it easier for users to check their answers and learn from their mistakes. Overall, Digital Electronics 101 is an excellent tool for anyone looking to brush up on their digital electronics knowledge.