Can computers become conscious

Before doing any reserach I think that computers will never be conscious.  How can you make a computer feel emotion?  You may be able to program a computer to act the way someone acts when they are angry but they are just running a program not actually feeling that emotion.  After reading this article it seems to me that a computer will never become conscious or if they do it will not be for a very long time. The article states "It has been estimated that that the information processing capacity of even the most powerful supercomputer is equal to the nervous system of a snail".  If it is so far way it will be along way off if it ever becomes possible to equal a humans.  This article also talks about the different way computers "think" and the way humans think.