User manual

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Chapter13 4-bit Nixie tube

What’s digital tube?

Digital tube is one kind semiconductor light emitting device. Their basic unit is light emitting

diode. Digital tube is divided into 7 segment digital tube and 8 digital tube by the number of

segments, 8 digital tube has one more light-emitting diode unit (a decimal point display) than 7

segment digital tube;

Digital tube has be divided into 1, 2, 4, and so on digital tube depend on how many “8” it can

show.

Digital tube is divided into common anode digital tube and common cathode digital tube by the

connection of the light-emitting diode unit. The common anode digital tube is that connect

light-emitting diode anode together to form a common anode (COM).Common anode digital tube

public pole COM to +5 V, should be applied in light-emitting diode cathode when a field is low,

the corresponding field lit. When a field of the cathode is high, the corresponding field is not

bright.