US Patent 10452104 Data processing device

To provide a highly browsable data processing device or a highly portable data processing device, a data processing device including the following is devised: an input/output unit provided with a display portion which can be folded and unfolded and a sensor portion that can sense the folded and unfolded states of the display portion and can supply data on fold, and an arithmetic unit that stores a program for executing different processing depending on the data on fold.