Solid state rotary entry control system

A rotary entry control system for an appliance control that includes a microprocessor and display means electrically connected to output means of said microprocessor and thereby being controlled by said microprocessor, the control system comprising, in combination, rotary entry logic encoding means electrically connected to input means of said microprocessor for entering desired data into said microprocessor, said entry logic encoding means comprising an electrically insulative member having two like and circular and uniformly segmented conductive tracks disposed thereon in concentric and in offset relation relative to each other and having a circular and continuous conductive track disposed thereon in concentric relation to said segmented tracks, contact means cooperating with said tracks, and means to be operated by an operator for causing relative rotational movement between said insulative member and said control means for entering said desired data into said microprocessor, said microprocessor having means for operating said display means to display the magnitude of said desired data as said data is being entered into said microprocessor by said rotary entry logic encoding means, said rotary entry logic encoding means comprising a manually rotatable switch means that is adapted to be rotated in uniform increments of movement by an operator through a plurality of serially disposed ranges in one rotational direction, said serially disposed ranges being arranged so that said rotatable switch means must be rotated at least more than 360.degree. in said one direction in order to move through all of said ranges from the beginning thereof to the ending thereof, said means of said microprocessor causing a uniform change in said magnitude of the data displayed by said display means for each said increment of movement of said rotatable switch means in said one direction in each said range with each uniform change in magnitude for its respective range being a different amount than the amount of uniform change in the range adjacent thereto.