What is the difference between win7 system and win8 system?

Recently, a friend of Xiaobian wants to buy a computer, so he ran over and asked me, many people recommended the computer of win8 system to him, but now many friends around him still think that the computer using win7 system is better, then the two systems have ? What is not the same place it today, small series to win7 iso image download, for example, the system for everyone Tell me

first point:! first of all, we feel the most intuitive, that is, Win8 system main push touch function, this is not in the win7 system, this can be said to be a highlight of the win8 system, just like the preview function of the win7 system, very cool. But at the same time we have to point out that because the touch function requires strong technical and hardware support, this function does not seem to be so powerful, and even some feel strong outside.
Second point: cloud technology. This is a problem that we must deal with when we talk about the Internet. Nowadays, the technology seems to have begun to move toward this cloud. This has a relatively large manifestation in the win8 system, and the cloud function that has emerged in the system has become The highlight of the win8 system.
Third point: USB3.0 function. Although it has already started to support this technology in some versions of win7 system, it does not let it play well. In win8 system, we have seen more powerful USB3.0,