-Status 1: PC Keyboard to send any number of 0-9, sending the number of single-chip receivers, and digital tube display.
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With 12 LED digital display, can show the tube voltage, current and count value.
具有12位LED数码管显示，可分别显示电压、电流、计数值。
The LED digital tube can display the numeral or sign, and it is usually used to show time, speed, the system's state etc.
LED数码显示管可以显示数字或符号，通常用来显示时间、速度、系统状态等。
However, the characteristics of LED dot matrix display is not only here, LED dot matrix display using a digital, and digital tube has a practical, cost advantages.
然而LED点阵显示屏的特点不仅仅于此，LED点阵显示屏用的是数码管，而数码管具有实用，便宜等优点。
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