LED digital tube is a basic display component specifically designed to show two-digit numbers (00-99). It presents numbers through the on-off combination of LED beads and is widely used in various electronic devices due to its advantages of compact size, low power consumption, and easy control. The polarities of LED digital tubes can be divided into two types: common cathode and common anode. The operating voltage of a single LED is usually 2.8V - 3.2V, and the maximum current per segment is approximately 20mA. It offers a wide range of luminous colors, including red, blue, emerald green, yellow, white, and orange.