when pin 13 is high does pin 12 go low next?
Your question is not quite clear. I understand that you're asking if you make pin 13 HIGH, will pin 12 go LOW automatically.
The answer is "usually not". Which board?
Your topic does not indicate a problem with IDE 1.x and therefore has been moved to a more suitable location on the forum.
Interesting questions but I cannot give you an accurate answer as you did not tell me what we are talking about; I have lots of items that have a pin 12 and a pin 13.
OP doesn't have an accurate description on any topic. Check their activity.
low hi