Data processing apparatus; computers, namely, computer hardware; computer software, namely, for use in database management, use as a spreadsheet, word processing; computer peripheral devices; interfaces for computers; transmitters of electronic signals; telecommunication transmitters; optical communication instrument, namely, optical receivers, optical data links, cable television transmitters; programme control phone exchange facility, namely, automated telephone exchanges, telecommunication exchangers; cards with integrated circuits; electric installations for the remote control of industrial operations