I have a 7-segment Common Anode display I got off spark fun. It has 5 pins at top, 5 pins at bottom. Center pins get +5v(common anode) and the remaining 8 pins(cathodes) when grounded, through a series resistor, will light up. So I know the arduino has internal pullup resistors and if I used let's …

Common Anode 7 segment display:internal pullup on all 8 cathode pins ok?

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