I remember reading a short story where an android experiments on it's self, after discovering "he" is not human, but an android. Some how "it" discovers how it's chest opens to see a computer tape running.
What was the name of this story?

Hi Ronbo, and welcome.

I would say the story you describe is NOT a Ray Bradbury story, but is likely to be "The Electric Ant" by Philip K. Dick.

Details here:

http://en.wikipedia.org/wiki/The_Electric_Ant

Could be, but I surely don't remember anything about the main character being an ant

oops. My bad. "electric ant" was a term meaning Organic robot, which makes sense

All the places you can find this widely-anthologised tale:

http://www.isfdb.org/cgi-bin/title.cgi?53526

Wow, you're good, Phil! I first read that story about three months ago.

I just know what I know!

I read the story back in the '80s, and the central image Ronbo described stuck with me - but the title of the story didn't. A quick look on Wikipedia for a list of stories by PKD gave me a hunch as to the forgotten title, which I then looked up on ISFDB... and a quick scan down the list of anthology appearances revealed just one anthology I remember reading (DECADE: THE 1960s, edited by Aldiss and Harrison).

Simple!

quote:

Originally posted by philnic:
Simple!

Just call him Sherlock! Quite the deducer, you!

I encountered it in this terrific book:

http://www.isfdb.org/cgi-bin/pl.cgi?296059