Graphics tablet
The image is shown on the computer monitor, though some graphic tablets now also incorporate an LCD screen for more realistic or natural experience and usability.The RAND Tablet employed a grid of wires under the surface of the pad that encoded horizontal and vertical coordinates in a small electrostatic signal.Key to this accuracy improvement were two US Patents issued to Stephen Domyan, Robert Davis, and Edward Snyder.Pucks range in size and shape; some are externally indistinguishable from a mouse, while others are a fairly large device with dozens of buttons and controls.[citation needed] While their pressure sensitivity and resolution are typically no better than those of ordinary tablets, they offer the additional advantage of directly seeing the location of the physical pen device relatively to the image on the screen.Using a pen-like stylus on a graphic tablet combined with a graphics-editing program, such as Illustrator, Photoshop by Adobe Systems, Corelpainter, or Krita gives artists a lot of precision when creating digital drawings or artwork.Photographers can also find working with a graphic tablet during their post processing can really speed up tasks like creating a detailed layer mask or dodging and burning.Online teachers may also use a tablet for marking student work, or for live tutorials or lessons, especially where complex visual information or mathematical equations are required.Tablets are also popular for technical drawings and CAD, as one can typically put a piece of paper on them without interfering with their function.They can feel more intuitive to some users than a mouse, as the position of a pen on a tablet typically corresponds to the location of the pointer on the GUI shown on the computer screen.Interactive whiteboards offer high-resolution wall size graphic tablets up to 95" (241,3 cm) along with options for pressure and multiple input.
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