Ключевые слова: alphanumeric, board, character, circuit, closeup, color, component, control, countdown, counter, design, digit, digital, display, electrical, electronic, element, equipment, frame, illuminated, indicator, information, led, light, line, measurement, message, modern, module, monitor, number, numeral, numeric, numerical, panel, red, remote, scoreboard, screen, segment, sevensegment, sign, technology,