Ключевые слова: analog, analogue, black, blue, button, concept, connection, dark, debug, debugging, design, development, device, digital, distortion, electric, electrical, electronic, electronics, engineering, equipment, explore, frequency, high, instrument, instrumentation, knob, lab, laboratory, lcd, low key, measure, measurement, night, nobody, oscillograph, oscilloscope, research, rf, science, scope, screen, shadow, signal, technology, test, tool, troubleshooting, voltage, wave, waveform,