Electronic device and electronic system

Abstract

One object of an embodiment is to provide a novel electronic device which is configured so that a user can read data regardless of a location, input data by directly touching a keyboard displayed on a screen or indirectly touching the keyboard with a stylus pen or the like, and use the input data. The electronic device includes a first transistor electrically connected to a reflective electrode and a photo sensor over a flexible substrate. A touch-input button is displayed as a still image on a first screen region of a display portion, and a video signal is output so that a moving image is displayed on a second screen region of the display portion. A video signal processing portion supplying different signals between the case where a still image is displayed on the display portion and the case where a moving image is displayed on the display portion is provided. After writing of a still image is performed, a display element control circuit is put in a non-operation state, whereby power consumption can be reduced.

Dependencies are inferred from the claim text.