A backpack—also called bookbag, knapsack, rucksack, rucksac, pack, sackpack or backsack—is, in its simplest form, a cloth sack carried on…
Pen computing refers to any computer user-interface using a pen (or stylus) and tablet, rather than using devices such as…
An active pen (also referred to as active stylus) is an input device that includes electronic components and allows users…
A pen is a writing instrument used to apply ink to a surface, usually paper, for writing or drawing. Historically,…