Currently, electronic devices are very popular with every student. Using computer help us learn lessons effectively with explanation, sounds and pictures. They help students communicate with each other or relax by listening to music and playing games when they are bored and tired of studying. Students study better by using helpful learning apps on smartphones, laptops, tablets and other media players (dictionary, spelling, translation, pronunciation and other apps). Electronic devices can be used for research and study, and for storing information and textbooks. This can save time and make students' backpacks lighter. But in addition to the benefits that electronic devices bring, they also have disadvantages such as: The computer makes our eyes tired. Electronic devices distract students from their studies: students may play games, text, chat and cheat (type the questions and search for answers on the Internet). Students have access to inappropriate information, videos and pictures, spend many hours reading and watching, and forget about their projects or assignments. Students might take embarrassing pictures of others, share them on the Internet or use them to demand money or force people to do things for them.