Abstract: A revolving backlit sign having a continuous translucent medium which engages the perimeter of a plurality of translucent drive rollers, the drive rollers being rotated by a drive band associated with an electric motor, and one or more light sources located within the perimeter of the drive rollers. A housing is also provided which encloses the drive rollers and continuous medium.

Abstract: A universal mounting bracket and assembly for use with a variety of display fixtures having slots for hanging brackets or displays including a hook member for insertion into a slot of the display fixture and adjustable leveling means for proper alignment of a display item or component.

Abstract: An assembly for housing an interactive computer which can be used for a variety of marketing functions. This assembly is designed to house a variety of electronic components which can be easily changed according to the changing marketing demands of the vendor.

Abstract: A circuit for testing a computer battery without removing it from the computer includes a plurality of serially connected resistors, and a transistor connected to saturate. The voltages at the junctions of the transistors is sensed by a logic device such as a buffer, for application to the data bus of the computer. The transistor may be controlled from the computer via a latch. The resistors have values to produce voltages at two sensed resistor junctions such that the corresponding logic levels applied to the computer are the same, at a first level, when the battery voltage is acceptable, are the same at another logic level when the battery voltage is unacceptable, and are different when the battery voltage is between acceptable and unacceptable voltage values.