Electronic equipment and electronic systems

The present invention provides an electronic apparatus and an electronic system. The electronic device comprises: at least one electrically conductive programmable unit configured to, when in contact with the second electronic device, according to a control signal for switching the ordinary mode and a good conductor the conductor pattern, so that the electronic device to the second transmission contact with said predetermined electronic device information; and a control unit configured to generate a control signal having a predetermined frequency; and a feedback information receiving unit configured to receive feedback information transmitted from the second electronic device from the feedback information in response to receiving the predetermined information transmitted .