To allow a user to displace a display member with satisfactory operability according to the natural movement of his or her hand without getting his or her hand caught.

In this information processor, linking arm members 2 are respectively mounted on the both side faces of a device main body 1 so as to be rotatable, and the both side parts of a display member 3 with a touch input function are respectively mounted on the linking arm members 2 so as to be rotatable, and when an arm main body 9 is erected almost vertically to the device main body 1, an arm top end part 11 of the linking arm member 2 is bent from the arm main body part 9, and projected to the front side of the device main body 1. Therefore, a clearance S can be arranged between the arm main body part 9 and the both side parts of the display member 3. At the time of moving the display member 3 up and down, or at the time of displacing the directions of the surface and back faces of the display member 3, even when a user rotates and moves the display member 3 by holding the both side parts of the display member in his or her hand, the user can displace the display member 3 with satisfactory operability according to the natural movement of his or her hand without getting his or her hand caught.