This question was closed with the reason "This question does not appear to be about electronics design within the scope defined in the help center."
That I don't understand. The OP wants to interface to a resistive touch screen using either an Arduino or a microprocessor. That seems to be in the purview of "a specific electronics design problem" as described in the help center, just below the first paragraph.
There are certainly lots of other questions on this site re interfacing to an Arduino, so I can't see how that is an issue.
Granted, he has some misunderstandings on what a microprocessor (or microcontroller) is, which is covered in the answers. His best bet, obviously, is to use an Arduino.