Ключевые слова: analyzing, background, black, button, color, colorful, computer, design, device, digital, display, electrical, electricity, electronic, engineer, engineering, equipment, experiment, frequency, icon, illustration, industry, instrument, isolated, lab, laboratory, measure, measurement, measuring, monitor, oscillograph, oscilloscope, pink, power, radio, research, science, scientific, screen, signal, sine, symbol, technology, test, tool, wave, waveform, white, work,