Ключевые слова: abstract, air, audio, background, blue, circle, concentric, connection, cyberspace, design, digital, echo, effect, electric, element, frequency, futuristic, glow, glowing, heart, icon, internet, light, neon, network, protection, radar, radial, radio, radius, ring, round, router, set, sign, signal, sonar, sound, splash, symbol, tech, technology, touch, transparent, wave, wifi, wireless,