Ключевые слова: 4k, blue, changing, changing level, communication, computer, concept, connect, connection, cyberspace, data, digital, electronic, fi, flat, free, hotspot, icon connection, illustration, information, internet, isolated, level, mobile, network, phone, plexus, point, retro, router, sign, signal, symbol, technology, vintage, wave, web, website, wi fi, wifi, wifi icon, wireless, world,