The website of "PC World" has recently selected 14 pairs of the most classic "deadly enemies" in the IT market, including Gates and Jobs, Ballmer and Tovarz, Intel and AMD, as well as Microsoft and Google. A wonderful rivalry can not only draw people's attention, but also make them involuntarily take one side. The rivalry between Coca-Cola and Pepsi is like this. Of course, in the IT market, there are no shortage of such "deadly enemies".