Problem of the present invention is that component costs. Moreover, it is not necessary to which the damage for improving availability power consumption on good terms can reduce tablet management. Solution is, each of the tablet that tablet successively plus between the first thin layer 31, the second thin layer 32 and third thin layer 33, the second thin layer 32 and third thin layer 33 is inserted into up and down is separately positioned on each of the contact conduction portion 39 configured on the opposed face of the second thin layer 32 of the first thin layer 31, tablet, the position of contact conduction portion 39 is respectively set, two contacts 42 discretely configuring on the face for keeping the 1st thin layer of the 2nd thin layer opposite have: third thin layer 33 is at least top and the third thin layer 33 of tablet from back side mode outstanding, the outer shape of tablet is coincide, and. The lateral surface direction push-in in the back side of the third thin layer 33 of tablet, the contact conduction portion 39 of two contacts are in contact, and then the tablet of a part fracture of the second thin layer 32 and third thin layer 33 is removed. The figure of Fig. 9
