Pen computing
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Pen computing refers to any computer user-interface using a digital pen or stylus and tablet, over input devices such as a keyboard or a mouse.
Samsung Galaxy Note phablets include a stylus, called "S Pen".
GridPad
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The GridPad is a discontinued family of pen-enabled tablet computers and hybrid laptops built by Grid Systems Corporation.
GRiDPad 2260 in tablet mode
GridPad 2260 in "laptop" mode