9 Scientific, optical, weighing, measuring, signaling, controlling (inspection), apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; computers, computer peripherals, computer terminals, recorded computer programs; measuring instruments; measuring instrument software; software for measuring electromagnetic interference (emi) and electromagnetic compatibility (emc); apparatus for data processing; computer software; equipment for the analogue-to-digital, digital-to-analogue or digital-to-digital conversion of electrical signals; field intensity sensors; converters; modular storage units specially intended for containing software (so-called 'modular software racks').