Electronic display cabinet unit comprising image generator, viewing screen, mirrors, audio speakers and lighting, for producing three-dimensional holographic images; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recording discs; vending machines; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus

Electronic display units providing free-floating images, in particular electronic advertising display units providing free-floating video images using half-silvered mirrors; hologram apparatus, namely, Pepper's ghost displays