Patent ID: 8350813

Claim:
A digitizer comprising: a case including an upper case and a lower case, the upper case having an opening for exposing an input portion of the digitizer therethrough, and the lower case being overlapped with the upper case, the case further including a substantially sheet-like frame arranged therein between the upper case and the lower case; at least three first projected portions fixed to the lower case, the first projected portions coming into contact with a placement surface so as to support the case on the placement surface; and a second projected portion projecting from the lower case in substantially the central portion of the lower case and inside of an area defined by connecting the points at which the first projected portions are fixed to the lower case, wherein the lower case includes an insertion hole through which the second projected portion extends, and a proximal end of the second projected portion is attached to the frame, wherein the second projected portion is configured to have a greater friction coefficient than the first projected portions such that, when a force substantially parallel to the placement surface is applied to the case, the first projected portions slide against the placement surface so as to cause the case to rotate relative to the placement surface with the second projected portion as a rotation axis.