Why do some tablets have screens?

Graphics tablet is mainly aimed at designers, teachers and students, advertising companies and design studios, animators and some photographers of fine arts. (key: the drawing board is not a writing board. These two things are completely different. Writing board is a device for middle-aged and elderly people who are not good at keyboard input. )

The graphics tablet itself has no screen. Users need to control the tablet and then stare at the cursor on the computer screen to draw. The chessboard itself will not show anything. The digital screen is more hand-painted, because it is drawn directly on the display with a pen, so the digital screen is more intuitive. (Key point: More than 93% novices always feel that they can't adapt to the hand-eye separation operation of the graphic tablet, and then they yearn for the digital screen from the heart, but I can tell you responsibly that this idea is really ridiculous. The human body itself does not have to rely on hand-eye fusion to function as you think. The mouse is a good example. You don't look at the mouse when you use it, but isn't it just as accurate? Or do you think it is necessary to use a touch screen to be more accurate? )