Force sensor in this gadget work as an eye of this gadget. When the user tries to write or draw something on paper in that case sensor detects the pressure to activate the various functions. Several types of force sensors are present as per requirement, each of them uses different technology to sense the magnitude of a given pressure or force and create an output signal. The most common types of force sensors include Load cells, Strain gauge, and Force sensing registers.
This is a storage unit inside a digital pen. Memory stores processed input data to send it to the connected computer system. Most of the manufacturers provide inbuilt memory storage whereas some of them provide a slot to insert external memory.
It is the brain of this gadget. This component does all the primary processing on the raw input data. It also provides synchronization between inside and externally connected devices.
It is the primary interface between writing paper and computer system. When the user writes or draws something on paper the camera captures the data in pixel form and sends it to the processor unit for further processing.
This unit contains ink for writing or drawing. Ink cartridge and force sensor allow the user to see what is written.