A tablet type computer for radio communication with other radio devices using two or more antennas in which, when sending radio waves, a radio communication control unit switches the antennas so that sending of radio signals is made using the antenna disposed at a position farthest from the operator or disposed at a position where the possibility of a part of the operator body coming in touch with the antenna is the lowest. With this operation, even a tablet type computer can keep away as much as possible a hand or a part of the body of the operator from the antenna which is a source of harmful electromagnetic waves.