Theycome in a varietyofdisplaymodes, includingCGA (ColorGraphics Adapter), VGA (Video Graphics Array), XGA (Extended Graphics Array), and the high-definition SVGA (Super Video Graphics Array).
RSC's WebPad device, for example, features a 10-inch 800 x 600 pixel superVGA touch-screen and is encased in a frame that has buttons for controlling the cursor and other commands.