The Pcs or the tablet Pcs?
A tablet PC is a touch-screen portable computer!
Pecker
Only the handful of HP tablet PCs have touchscreens, otherwise they are all standard screens.
Tablet PCs are only useful if you inted to do a lot of notetaking. For Web browsing or listening to much they are no better than traditional laptops.
A laptop tablet is a device smaller than a laptop but with the added benefit of a touch screen, such as an iPad. PCS stands for personal communication services, a wireless internet service that will enable you to connect your laptop tablet to the internet.
I suspect Tablet PCs are named after tablets of stone - a sheet of flat stone which was engraved with writing. Both are single, flat sheets - unlike laptops which have a keyboard which folds over the screen. Tablet PCs are always touchscreens, and so don't need a keyboard.
There are several different types of tablet computers out there, and the first thing is knowing the difference between them. Tech-FAQ.com has a great article which goes into the types of tablet PCs and how they work. http://www.tech-faq.com/how-do-tablet-pcs-work.html.
ARM processor
Yes.
Microsoft OneNote
A tablet computer, also known as a Tablet PC, is a laptop that is equipped with a screen that reacts to touch in some way. Almost all Tablet PCs can be controlled using a stylus type pen and some Tablets react to touch from any object, including a finger. Most commonly used in business settings, Tablet PCs are meant to simulate pen and paper.