ok Tenaja, I understand the internal pullups but what I realy want to know is if you were designing a circuit with switches controlling inputs, would you use
a 1 to trigger the input or a 0 to trigger the input. I can design it eather way. I have had some people say keep all inputs (pulldown) normaly to ground until you trigger with a +5v and then some say always have a +5v pullup and ground the pin to trigger. Which is the prefered method?