Abstract: This invention relates in general to the field of position sensing devices. More particularly, the present invention relates to a multi-ball position switch.

Abstract: The present invention is a low cost electronic apparatus construction method which may be employed for hand held calculators, electronic learning aids and electronic games. This technique involves a simplification in the construction of the apparatus including reduction in the number of piece parts necessary for the assembly. The primary electrical circuit interconnection pattern of the electronic apparatus is printed upon a part of the case of the apparatus which must be nonconducting. This printed circuit pattern together with the construction of the back case includes connection portions for electrical connection to the major components of the apparatus which may include an integrated circuit, a display device and an electrical power source. The primary circuit pattern printed on the back case includes a plurality of interleaved comb key switch positions.

Abstract: A flexible media having a plurality of electrical conductors extending radially outward from a central portion thereof with insulative material interposed between adjacent conductors. Radially inward portions of selected ones of the conductors are placed in contact with respective ones of a first set of electrical components disposed in a first predetermined pattern and radially outward portions of the selected conductors are placed in contact with respective ones of a second set of electrical components disposed in a second predetermined pattern, the second set of components being spaced farther apart than the first set of components. In one embodiment the media is comprised of a circular elastomer material having electrical conductors disposed at equal angular intervals over the circumference of the material.