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11 years, 2 months ago.
7 Segment LED
I've just run program example 3.5 from the book and after getting my head around what was happening I've had to invert each byte so for 0 which should be 0x3F I have 0xC0, for 1 which should be 0x06 I have 0xF9. Does this imply my 7 segment display has logic inverters inside?
7 Segment display was in a bag of bits I bought from local shop.
Many Thanks Degs
1 Answer
11 years, 2 months ago.
Sounds like a common anode, meaning all anodes are supplied by 5v and you pull the cathode to ground to create a potential difference across the LED. Unless im confused by the question. I did the exact same thing, just gessed they would al be common cathode.
- apologies for my poor spelling still getting used to touchscreen. You will have one pin marked a/k if this pin is at 5v then you definately have common annode.