How to cascade IC LM3914

In this video, I've explained how to cascade LM3914 IC.
Basic things of LM3914 IC:
https://youtu.be/lyBWcs3Uyx4
Pull down resistor:
https://youtu.be/7J_4eA5RUzk
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Required Components:

IC : LM3914
Resistors : 4.7 K
Miscellaneous : LED

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Видео How to cascade IC LM3914 канала EE Wave