The Tablet PC is a notebook or slate-shaped mobile computer that is approximately the size of a paper tablet. It gives us portability, flexibility and usability that are changing the way we work with our computers. Its touch screen or digitizing tablet technology allows the user to operate the computer with a stylus or digital pen instead of a keyboard or mouse.

Tablet PCs will have two formats: the "convertible" model with an integrated keyboard and a display that rotates 180 degrees and can be folded down over the keyboard, and the "slate" model with only a screen and pen. They can use external wireless or USB keyboards. The most popular convertible tablet PCs are the Acer and Toshiba. The most popular slates are the Motion Computing/Gateway Computers, Fujitsu, and HP/Compaq.

Many Tablet PCs use a Wacom digitizer, which delivers pen-position input to the computer at a fast rate. Tablets with these digitizers project a small magnetic field above the screen that interacts with electronics in the tablet's stylus. The user therefore is able to rest their hand on the screen without affecting the image or mouse pointer; only movement of the stylus affects the mouse pointer.

Tablet PCs became available to the general public with the introduction of Microsoft's Windows Tablet PC Edition in the fall of 2002. Before then they were used in small markets in industry, medicine, and government. Now they are used by students and many professionals.

Let us now have a look at the improvements in Tablet PCs: