Ключевые слова: according, ancient, background, blackboard, business, button, call, cell, cellular, classic, collection, communication, concept, connection, design, device, drawn, electronic, era, evolution, graphic, hat, history, holds, icon, illustration, internet, invention, men, mobile, modern, object, old, people, person, phone, progress, quarantine, school, screen, set, smart, smiling, symbol, technology, telephone, touchscreen, wire, wireless,