An upright vacuum cleaner includes a base unit having a suction inlet, a suction generator and a locating element. The method permits the manipulation of extremely large data sets in a manner that is simple to understand and convenient to use. The first memory is parked when the first memory has received the application data. Ion implantation of dopants of a second conductivity type is performed to dope regions of the top semiconductor portion that are not masked by the stack and the dielectric spacer, thereby forming an emitter region and a collector region. The free end portion of the engaging element has a flat contact surface that extends into the central through-hole to abut against the contact surface of an adjacent one of the teeth in such a manner to arrest rotation of the mounting seat relative to the second fastener component in a direction. The array of fibers may be coupled either in pairs or altogether between the reflector and the laser active region.