Abstract: A keyboard assembly including a non-linear curved keyboard, a base, and optionally a pointing device such as a trackball. The keyboard comprises an elongated base having an upper non-linear surface and a plurality of keys attached to the upper surface. The plurality of keys is divided into several groups and the geometric relationships between the keys are selected such that to allow maximum use of the thumbs and the fingers, the wrists, the forearms, and the shoulders are in a natural position. An asymmetrical element, supported by asymmetrical theory of nature discussed in I-Ching and embodied in the He Tu diagram, may be introduced into the geometry arrangement. The creation of asymmetrical groups are detailed which allow more ergonomic adjustment of the keys, yet preserve the existing geometry of an original keyboard. A trackball may be added in the space between the upper surface and the elongated base.

Abstract: An ergonomically designed walking cane with the sole purpose of reducing the force of impact and the associated impulses along the longitudinal axis of the cane shaft as generated when the cane tip hits the ground during walking. With a systematic approach taken to treat the interfaces between the cane, the user and the ground as a whole system and then followed by detailed analyses backed by human physiological and ergonomic studies, the resultant optimizations and improvements are made to achieve this objective. The resultant reduction in the force of impact and the associated impulses in said walking cane minimizes the risk of injuries such as the Repetitive Strain Injuries and other potential injuries to the wrist, hand, arm shoulder, back, spine, neck and the head. The immediate therapeutic benefits to a user are the lack of any undue fatigue and the almost effortless sensation associated with extended period of use of said ergonomic cane.