Ключевые слова: abstract, black, blue, button, chrome, click, close, close up, computer, connect, control, control panel, display, electric, electricity, electronic, end, energy, engineering, factory, hardware, high, industry, key, light switch, machine control, modern, off, on, power, power supply, press, push, receiver, red, sign, silver, sound, stainless, start, start button, steel, stop, switch, symbol, system, technical, technology,