Input Device: Digitizer

A graphics tablet (or digitizer, digitizing tablet, graphics pad, drawing tablet) is a computer input device that allows one to hand-draw images and graphics, similar to the way one draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. It can also be used to trace an image from a piece of paper which is taped or otherwise secured to the surface. Capturing data in this way, either by tracing or entering the corners of linear poly-lines or shapes is called digitizing.
A graphics tablet (also called pen pad or digitizer) consists of a flat surface upon which the user may "draw" or trace an image using an attached stylus, a pen-like drawing apparatus. The image generally does not appear on the tablet itself but, rather, is displayed on the computer monitor. Some tablets, however, come as a functioning secondary computer screen that you can interact with images directly by using the stylus.

A digitizer or tablet is a surface over which a stylus (similar to a pencil) or hand cursor is moved. The location of the hand cursor or stylus is available to the computer system. The size of the tablet, a square block, varies from 10 inches to 5 sq. ft. depending upon application. The stylus senses a position through a transducer (pressure-sensitive switch) so that the movement of the stylus over the tablet causes a corresponding line on the CRT screen.

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