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thanks for the advice. i now see how the subtraction is cheating. the method i developed is just hanndy for ppl addition not compy addition. i'll start dealing with binrary addition. i glanced at the wiki on binary addition then thought that would be cheating my self. im going to try to figure as much as i can by my self before i start looking the stuff up. i have some prototype boards, transistors and LED's so this should be fun. :banana:
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i dont know much about programming but i try to help
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