Audiovisual display apparatus adapted for use with computers; audiovisual display apparatus for use with computers; peripheral interface units for computers; peripheral sharing devices for computers; personal computers; portable computers; storage discs for use with computers; tablets for computers; tape drives for use with computers; tape units for backing up computer data storage devices; tape units for backing up computer data storage systems; television display apparatus for use with computers; television display monitors for use with computers; television receivers for use with computers; work stations (computer apparatus); work stations (computers); apparatus for linking computers; apparatus for linking computers into networks; apparatus for receiving information from a computer; component parts for computers; components for computers; computer apparatus; computer apparatus adapted for use with visual display units; computer apparatus for the storage of data; computer components; computer disc drives; computer disks; computer display apparatus; computer display instruments; computer display monitors; computer hard disc apparatus; computer hardware; computer hardware; computer interface cards; computer magnetic memories; computer memories; computer memory devices; computer memory drive units; computer memory instruments; computer memory storage apparatus; computer modems; computer modules; computer monitors; computer mouses; computer peripheral devices; computer storage apparatus; computer systems; computers; disc (disk) drives for computers; disc drives (for computers); disc drives for use with computers; disk drives (for computers); display apparatus for use with computers; electronic computer apparatus; keyboard apparatus for use with computers; laptop computers; magnetic disks for computers; magnetic tape drives for computers; monitors (computer hardware); navigation apparatus for vehicles (on-board computers); navigation computers for cars; notebook computers; on-board computers; on-board computers for vehicles; optical discs bearing machine readable computer program; optical discs for bearing machine readable computer program; peripheral control cards for computers; peripheral control devices for computers; peripheral interface units for computers; peripheral sharing devices for computers; personal computers; personal home computers; portable computers; anti-theft electrical alarm systems (other than for vehicles); apparatus for connecting electrical circuit components; cable for electrical transmission; electrical apparatus for converting data signals into visual information; electrical apparatus for recording data; electrical apparatus for recording video images; electrical apparatus for the input of data; electrical apparatus for the output of data; electrical apparatus incorporating televisions; electrical devices for data information display; electrical devices for storage of data; electrical instruments for recording sound; disc drives for electronic data processing apparatus; display apparatus (electrical or electronic); electronic memory units; electronic memory units for computers; electronic message handling apparatus; electronic musical recording apparatus; electronic navigating apparatus; electronic navigation apparatus; electronic navigation instruments; electronic notebooks; electronic panels for displaying messages; electronic personal organisers; electronic photo-flash units; electronic surveillance apparatus; surveillance apparatus; surveillance apparatus (electronic); surveillance instruments; television cameras for surveillance; video surveillance apparatus; video surveillance cameras; projectors; telephone apparatus; television apparatus; camera apparatus; monitor screens