Abstract: A semiconductor device includes a substrate, an initial layer, and a superlattice stack. The initial layer is located on the substrate and includes aluminum nitride (AlN). The superlattice stack is located on the initial layer and includes a plurality of first films, a plurality of second films and at least one doped layer, and the first films and the second films are alternately stacked on the initial layer, wherein the at least one doped layer is arranged in one of the first films and the second films, and dopants of the at least one doped layer are selected from a group consisting of carbon, iron, and the combination thereof.

Abstract: A multi-socket computer adapter having a trapezoidal shell, a plug alternatively mounted in different orientations on the trapezoidal shell between two reversed directions by removal and reassembly for connection to a power output socket of a computer to receive power supply from the computer, and a plurality of sockets integral with the trapezoidal shell and connected in series to the lug for receiving computer peripheral apparatus, whereby when the computer is turned off peripheral apparatus joined to the adapter lose power.

Abstract: An improved electrical connector for computers adapted for connecting electric currents to cooling fans of CPUs or computer peripheral equipment. The electrical connector includes a front housing and a rear housing joined together integrally and a plurality of contacts each comprised of a front portion and a rear portion fitted respectively to the ends of a connection portion, the contact being placed inside the front and rear housings. The contacts are firmly held within the housing due to the configuration of the inner walls of the front and rear housings. The assembly process is simplified and costs reduced. The overall reduced size of the electrical connector occupies makes efficient use of the limited space of the computer.

Abstract: A multi-outlet electrical adapter having a plug unit at one side adapted for connecting to a power outlet socket of a computer mainframe, an electrical outlet adapted for receiving an electrical plug of an electrical cable of a computer peripheral equipment, and one receptacle unit disposed at a second side, the receptacle unit and the receptacle unit being so designed that a plurality of multi-outlet electrical adapters can be connected together by connecting the plug unit of one multi-outlet electrical adapter to the receptacle unit of another.