US Patent 7667958 Display unit

A display unit comprises a display unit body, a display part displaying information, a first button so provided as to protrude from the bottom surface of display unit body and a second button provided on the upper surface of display unit body. A first function is realized by pressing a region of the upper surface of display unit body adjacent to second button to rotate display unit body and to push first button into display unit body. A second function different from the first function is realized by pressing second button with a prescribed load to rotate display unit body and to push first button into display unit body.