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If I understood you correctly, and I am not sure I did, your push button switches ground the ports. If that is true, then yes, a pull up resistor, either internal (wpu) or external would seem to be in order. If your push buttons make the ports go high, then a pull down resistor would be required.Originally Posted by newbie
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
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There simply is no "Happy Spam" If you do it you will disappear from this forum.
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