Poli, leave me correct you, the word chips, in Mexico it's used in a piece of plastic, if you have a celphone your celphone has a chip, now the chips here there aren't totopos, it's widely use as a product named Sabritas, in really it's very delicius, well, the word chips like we the informatics use this word in ours targets or our mobos, but chips ain't totopos, look an example the Sabrita is made with fried potatoes and the totopos are fried tortillas, I hope have me exaplained well.
If you have more doubts please let me know.
The green chips are my snaks favorite.
Here I've sheared some about the chips Barcel.
http://en.wikipedia.org/wiki/Barcel