Ключевые слова: book, bookmark, closed, closeup, communication, computer, concept, connection, cover, data, database, digital, education, gold, hole, icon, info, information, innovation, internet, key, keyhole, knowledge, label, learning, lock, message, net, network, pad, padlock, protection, reading, research, ribbon, safe, safety, science, security, storage, study, symbol, table, tech, technology, web, white, white background, yellow,