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seven segment led display
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is that necessary to connect the both com with the ground in common cathode ??

Arduino Electronic-components-and-connections 10-11 min 40-50 sec 09-10-18, 5:25 p.m. Balaganesh.G

Answers:

Yes.
It is explained and shown in the video at 2:50.
The two common (COM) pins are connected to the ground through the resistors.\r\n
03-12-18, 11:32 a.m. NirmalaVenkat
no any one can be given to cathod bcoz common terminals are shorted together
03-03-19, 3:54 p.m. 161040109003@gperi.ac.in

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Hi, 

I need to see a few suppositions about the plainly progressively favored "look screen" work against the notice LED.
31-03-20, 1:59 a.m. dynamoleddisplays

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