9 Computers and microprocessors for use in railway control and signaling, scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, supervision, life-saving, rescue, and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers and recording discs; prerecorded magnetic data carriers and recording discs featuring software for use in planning, designing, building, and controlling Signalling, Railway and Metro Transport Systems; blank DVDs and other digital recording carriers, namely, USB drives and disk drives; prerecorded DVDs and other digital recording carriers, namely, USB drives and disk drives featuring software for planning, designing, building, and controlling Signalling, Railway and Metro Transport Systems; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing apparatus; computers; computer software for use in planning, designing, building, and controlling Signalling, Railway and Metro Transport Systems; fire-extinguishing apparatus