A notebook-type personal computer that runs "Windows XP Tablet PC Edition" operating system (a super-set of Windows XP Professional). It features "digitizer" (not to confuse with "touch screen") on the display, what makes it possible, with use of special pen (stylus), to you use hand writing/drawing on the display.
There are two kinds of digitizers for Tablet PC - one that requires to put batteries to the stylus and one that uses stylus without any battery. The second one uses technology from Wacom and we advice to buy only such Tablet PC devices, that don't need battery in the stylus!