Electro-dynamic apparatus for the remote control of signals; global positioning system [GPS] apparatus; electric apparatus for commutation being commutators; computer memory devices; electric circuit closers; current rectifiers; infrared detectors; blank floppy disks; blank magnetic disks; disk drives for computers; juke boxes for computers; DNA chips; interfaces for computers; cables, electric; computer keyboards; electrical wire connectors; magnetic encoders; compact discs featuring instruc...