The LED digital tube is actually composed of seven LEDs in a figure-eight shape, plus eight decimal points. These segments are represented by the letters a, b, c, d, e, f, g, dp, respectively. When a specific segment of the digital tube is applied with a voltage, these specific segments will illuminate to form what we see in our eyes. Such as: display a "2" word, then it should be a bright b bright g bright e bright d bright f no bright c no bright dp not bright. LED digital tubes are generally bright and super bright, and also have different sizes such as 0.5 inch and 1 inch. The display pen of a small-sized digital tube is usually composed of one light-emitting diode, and the large-sized digital tube is composed of two or more light-emitting diodes. Under normal circumstances, the tube voltage drop of a single light-emitting diode is about 1.8V, and the current does not exceed 30 mA. The anode of the light-emitting diode is connected to a positive-positive digital tube that is connected to the positive pole of the power source, and the cathode of the light-emitting diode is connected to a negative-phase digital tube that is connected to the negative pole of the power source. The numbers and characters displayed by the commonly used LED digital tube are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
The 8-inch tablet will have a big impact on the 7-inch and 10-inch tablet market. Because the portability of an 8-inch tablet is stronger than that of a 10-inch tablet, and the usable area is larger than that of a 7-inch tablet. The most important thing is that the price is more moderate, which is much cheaper than a 10-inch tablet. It can be said that the 8-inch tablet computer has a good balance between portability and screen display area, and is more likely to be favored by the majority of users.
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