OK, I am going to play Devils advocate here...... Now fair enough, "beenuseren" may have asked an "obvious" question, but we all had to start somewhere, the guy (PC correctness=person) has only posted 8 posts, is obviously a newbie (possibly!).
The quickest way to get rid of "new blood" on any forum and to piss people off before they really get started, is, imho, to give sarcastic answers to simple, direct questions, if you don't want to answer his question, then don't! It's easy, no-one will flame you for it (unlike the treatment I am likely to get for this post!).
Check out this guys other posts... here is an example....
https://www.electro-tech-online.com/threads/impedence.22518/
He asks a straight forward question, and gets a decent answer, after which he thanks the members of the forum, and has probably learnt a lot, and more importantly, left the post for others to read/learn from (i am still going thro that post!... my head hurts!).
I know that reading some posts can be annoying, my pet hate is "I have a project/thesis to do, by tommorow, so give me the code and explination for it now, NOW". But I bite my tounge, *mostly*
Have you considered that maybe this person HAS looked on google etc, and doesn't understand the explanation(s) OK, so he could have said that....
I can remeber the 1st time I tried to get my head around interupts on a PIC, just
It was a nigtmare for me, and a little bit of explanation other than the Microchip blurb, would have saved me alot of time!
Anyway, rant over, bring on the flames!
Be gentle with me, I do see your "not again" point of view, but by looking at this guys other posts he seems keen to ask and keen to learn, lets not scare him of by being too grumpy