Clock LCD, abstract image. LCDs (liquid crystal displays) use electricity to change the optical properties of the liquid crystals. The LCD seen here alternates between black and orange. Each number uses a seven-segment design to allow all the numbers from 0-9 to be displayed. This clock is displaying 12:00, which is mid-day (noon) by the 24-hour time system. The image could be used to represent concepts such as 'high noon'.