Handwriting tablet, also known as the tablet (digitizer), is an input device that uses electromagnetic technology around the computer. It uses a special electromagnetic pen to write on the working area on the surface of digital tablet computer.

The electromagnetic pen can send out electromagnetic signals with a specific frequency. The digital board has a microcontroller and a two-dimensional antenna array. The microcontroller scans the X axis and Y axis of the antenna board in turn, then calculates the absolute coordinates of the pen according to the signal size, and sends about 100 to 200 sets of coordinate data to the computer every second.

Chinese name: handwriting board.

Category: input device.

Also known as: writing instrument.

Features: similar to a keyboard.

Function: painting.

Attribute: Independent input tool.

Handwritten drawing input device is the input device of computer, and the most common one is handwriting board, which is similar to keyboard. Of course, it is basically limited to inputting text or drawing, and there are also some mouse functions.

In daily use, the handwriting board can not only be used to input characters, symbols and graphics, but also provide cursor positioning function, so that the handwriting board can replace the keyboard and mouse at the same time and become an independent input tool.

In the design of the pen, it can be divided into two types: pressure sensing and non-pressure sensing. The pressure-sensitive tablet can sense the strength of the stylus on the tablet, thus producing strokes with different thicknesses. This technical achievement has been widely used in art painting, bank signature and other professional fields, and has become one of the indispensable tools.