9 Electrical and electronic components and devices included in this class, namely, hybrid circuits and systems composed thereof, namely, electrical circuit boards and computer plug-in cards having electric and electronic circuitry and components mounted thereon; semiconductors; semiconductor devices, namely, transistors, diodes, electronic memories, electronic sensors, integrated circuits, silicon wafers; highly integrated circuits, particularly for automobile instrumentation and car dashboard electronics; devices for entertainment electronics, namely, CD players, MP3 players, DVD players, digital video and audio players; devices for car dashboards and instruments included in this class, namely, radar detectors, radios for vehicles and audio and video playback devices; semiconductors and analog and digital mobile phones; signal processors, namely, digital signal processors; decoders for TV sets and video units; apparatus for entertainment electronics, namely, cable television receivers, broadcast receivers and satellite receivers; tape recording apparatus and sound reproduction apparatus as well as recording apparatus and replay apparatus for other sound and image carriers, namely, sound recording apparatus, apparatus for speech recording and replaying; amplifiers; loudspeakers; apparatus for recording, transmission or reproduction of image and sound, namely, flat panel display screens, movie projectors, digital video recorders, video projectors; pressure sensors, particularly for air pressure measurement; magnetic field sensors, particularly for motor control; frequency filters particularly for high frequencies and telecommunication, namely, filters for radio interference suppression; data processors and data processing systems composed of computers; computers; computer hardware; computer software to control and improve digital audio and video quality; computer programs to control and improve digital audio and video quality; downloadable software to control and improve digital audio and video quality