Abstract: A method, apparatus, and article of manufacture for creating a shape for displaying information on a monitor attached to a computer is disclosed. The method comprises the steps of creating a spatial frame of the shape wherein the spatial frame provides a mapping function for the shape and provides a geometric framework for the shape, creating at least one event handler of the shape, coupling the event handler to the shape, and using the event handler coupled to the shape to display desired information on the monitor.

Abstract: A light weight, portable platform for supporting a notebook or laptop type computer elevates the computer monitor to a user friendly height above a supporting table or desk top surface. The platform back, sides and top may be interconnected using hook and loop tape and can be readily assembled and disassembled without the use of tools or separate connecting parts that may be misplaced or lost. The platform stores flat for transport with the principal elements occupying less volume than the compact computer it supports in the assembled mode. The platform comprises a pair of side members, a back member and a top member, with the alternative that the bottom surface of the supported computer may serve as the top member of the platform.

Abstract: A connector object supports bi-directional connections such that an instance of the connector object may behave as both a socket connector and as a plug connector. A first shape object and a second shape object having a first connector object and second connector object respectively that are instances of the same connector object are displayed on a display device. The first connector object is coupled to the second connector object wherein the first connector object and the second connector object behave both as sockets and plugs. An external connection manager resolves connections. The manager determines: (1) if shape connections should be resolved; and (2) one or more socket connector objects and plug connector objects that need to be updated from one or more other shapes coupled to the determined socket connector objects. Thereafter, the manager recursively updates each determined plug connector object.

Abstract: An upright conduit and disperser which provide the acceleration and uniformity of particle dispersion required for a smooth transition from dense to dilute phase in the pneumatic conveyance of gas entrained particles.

Abstract: A bidirectional line driver circuit for transmitting logic signals on a highly capacitive, or low impedance transmission line makes use of a tandem connection of switching means for providing a low impedance connection from the output of the driver circuit to either a first power supply voltage or a second power supply voltage to define transmitted logic levels. Coupled to the tandem switching means is a buffered feedback circuit which responds to conduction of the first switching means connected to the first power supply voltage such that nonconduction is produced in the second switching means connected to the second power supply voltage. A buffer transistor is incorporated in the feedback circuit to insure that this response occurs without significant loading of the output terminal thus eliminating the possibility of oscillation and providing for very high speed switching performance.