A cam mechanism through which torque applied to an input shaft is converted into the bi-directional rotation and reciprocating axial movement of an output shaft. The assembly includes a cylindrical housing containing a central tube which is surrounded by an annular chamber. Each evaluation circuit may comprise a first and a second capacitor configured to store a true and a complement value of a bit evaluated during a reset state. A mode selector selects isotonic and isometric control modes of the interface from an input device such as a physical button or from an interaction between graphical objects. The commit data may then be synchronized to each of the CAC servers in the second pool. 1 cm or more, residual magnetization Br of 1000 to 4000 G and coercive force bHc of a B-H curve of 0.