Like the touchpad, pen input is pressure-sensitive input device in laptops, some displays and mobile devices. It is shaped like a pencil and moving the pointing stick moves the cursor. The types of pen input included:
Stylus
Stylus is a small metal or plastic device that look like a tiny ink pen but uses pressure instead of ink. It can be found in all tablets, mobile devices, some laptop screens and a few desktop monitors. Some stylus designs include buttons you can press to simulate clicking a mouse.
Digital pen
Digital pen is a input device that slightly larger than a stylus, used to capture and convert a user’s handwriting or drawings into a digital format, which users can transfer to computer or mobile device. Some require the user to write or draw on special paper or a tablet; others can write or draw on any surface.
Graphics Tablet
A graphics tablet or digitizer is a flat electronic plastic board used to input drawings or other graphical data into computer. The user draws on the graphics tablet with an stylus, digital pen or a mouse-like device (called a puck). The drawing movements are converted into digital signals that are sent to the computer as input. Architects and mapmakers commonly use this input device to create images, sketches or designs.
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