Ключевые слова: abstract, background, banner, big data, blockchain, business, businessman, city, cloud, communication, computer, computing, concept, connection, data, development, diagram, digital, display, electronic, exchange, finance, future, global, information, innovation, interface, internet, iot, laptop, man, marketing, mobile, modern, network, networking, office, science, screen, smart, software, tablet, tech, technology, using, wireless,