Thanks for the replies guys!
Yeah, I know it's a pretty simple task which is why I think it'll make a great uhh... reintroduction project! lol. it's been about a year and a half since the last time i experimented with arduino but look at my previous posts, they can give you an idea of where i was as far as experience.
And I know they exist online, but this device will be mounted in our LED isle to help customers select the correct resistor based on the supply voltage and the current requirements of the led they choose.
i understand the "mechanics" of the program. for the most part i understand what, where, and when things need to happen, im just a little rusty on the language and format required to translate the concept in my head ya know what I mean? thanks for listing the main functions out though! as obvious as they may seem, i probably would not have done that and i think recognizing the main parts in that way will help me stay a little more (mentally at least!) organized and efficient as i develop those parts.
there may not be one good answer to this post but i can probably assemble something from the various insights you guys might provide! anything helps and is much appreciated.