The digital tube is a kind of display device composed of a plurality of light-emitting diodes. It can be divided into seven-segment tube, eight-segment tube, and m-shaped tube according to the field; according to the working mode, it can be divided into a common digital tube and a common digital According to the number of digits, it can be divided into 1, 2, 3, 4, etc.; according to the color, there are red, green, blue, etc., according to the size can also be divided into 0.28 inch, 0.30 inch, 0.36 inch Wait.
The digital tube is a semiconductor light emitting device whose basic unit is a light emitting diode. It is a four-digit digital tube that can display four digits. Of course, there are also many digital tubes with only one digit. Their electrical principles are the same. The digital tube is divided into seven-segment digital tube and eight-segment digital tube according to the number of segments. The eight-segment digital tube has one more LED unit than the seven-segment digital tube (one more decimal point display); the LED unit is divided into a common anode digital tube and Common cathode digital tube. The common digital tube refers to a digital tube that connects the anodes of all the light-emitting diodes together to form a common anode (COM). The common anode digital tube should connect the common pole COM to +5V when applied. When the cathode of a field LED is low, the corresponding field will light up. When the cathode of a field is high, the corresponding field is not lit. A common cathode digital tube refers to a digital tube that connects the cathodes of all the light emitting diodes together to form a common cathode (COM). When the common cathode digital tube is applied, the common pole COM should be connected to the ground line GND. When the anode of a field LED is high level, the corresponding field will be lit. When the anode of a field is low, the corresponding field is not lit.
The unit digital tube has ten pins, 8 of which are used to illuminate a, b, c, d, e, f, dp a total of 8 LEDs (introduced in the principle), 3, 8 two pins For the public COM feet, they are connected and function the same, and can be connected to any one. For a clearer introduction, the map is as follows:
According to the connection mode of the LED unit, it can be divided into a common anode digital tube and a common cathode digital tube. The common anode digital tube refers to the digital tube that connects all the anodes of the light-emitting diodes together to form a common anode (COM). The common anode digital tube should be connected to the common pole COM to +5V when applied, when the cathode of a field LED When it is low, the corresponding field is lit. When the cathode of a certain field is high, the corresponding field is not lit. The common cathode digital tube refers to a digital tube that connects the cathodes of all the light-emitting diodes together to form a common cathode (COM). When the common cathode digital tube is applied, the common pole COM should be connected to the ground line GND, when a field LED is used. When the anode is high, the corresponding field is lit. When the anode of a field is low, the corresponding field is not lit.
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