Set-top box: The current set-top box is different from the previous "closed-circuit TV set-top box". There is a "system" that collects the videos provided on the website and plays them through the set-top box! This is my understanding.

As for "flat", flat is flat. The tablet is just that the screen is bigger than the mobile phone, and there is no function of inserting comics. Others are the same as mobile phones, but the current "Android tablet" is weaker in function than mobile phones.

"Apple ipad Series" and Apple iPhone Series are almost the same, and the experience is similar. ...

Win8 tablet is different from Android and Apple. It can run both traditional pc-level programs and proprietary programs.