Hii

Mr. Richard you are right, the 0=GND and 5V=Vcc. Before explaining the question furthermore I just wanna share a small problem of mine. My professore are all Arabs and most of them usually fail to entertain us with their teaching and although being a bright student I and also my colleagues still can't understand the most simplest of things because of their language problem.
What I understand is that my professor wants to know that when I am supplying an AC input sine wave with an amplitude of +-2 when the ADC0804 is already regulated at 0 and 5V what changes will I see in these volatage levels and how do I calculate it. I hope I was clear in explaining this question. Other than that I don't have any information about the frequency or any other parameter.
Secondly I just wish to thank all the people that have replied so quickly and have been very helpful. It's good to see that this site is so very helpful