I understood that in Cathode 7 segment display. To turn a,b,c,d,e...., you need "HIGH" because they share same ground so that flowing of electricity into specific input will make them turn on. It would work the other way for anode, of course. But I don't know why it would be again, opposite, for, s…

Problem understanding 7-segment display

Nick_Pyner May 3, 2018, 4:25am 3

Your post is incoherent but

Cathode 7 segment display

suggests something, and Arduino Playground - HomePage may, along with the LED control library, help you sort things out.

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