Digital input device, digital correction device and correspondence education system

摘要

Digital data can be input and modified easily and appropriately, and the digital data creation process can be easily reproduced. A predetermined format format is displayed on the display unit by the control unit. The display unit displays information input by the electronic pen received through the position detection sensor by the control unit. The time-series data generation unit is a state that indicates time point information at a predetermined timing from the clock circuit, a detection output from the position detection circuit at a time point indicated by the time point information, and an operation state of the operation unit at the time point indicated by the time point information. Generate time-series data associated with information.