Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic and optical data carriers, recording discs; computer hardware, computer software including software for the production of digital media such as CDs and DVDs, archival systems to backup and restore data