Computer programs for electronic design automation; computer workstations for electronic design; electronic design analysis apparatus; computer aided manufacturing (CAM) apparatus; computer apparatus for computer aided manufacturing; computer programs for management of manufacturing; computer programs for the management of the manufacturing processes; computer programs for use in computer-aided manufacturing; computer programs for use with computer integrated manufacturing installations; manufacturing control installations (electric); measuring apparatus for use in the manufacturing industry; semiconductor manufacturing apparatus; tension monitoring instruments for thread manufacturing machines; acoustic receivers for telephonic communication with computers; add-on-cards for computers; apparatus controlled by computers for analysing samples; apparatus for linking computers; apparatus for linking computers into networks; apparatus for protecting computers from electrical power supply faults; apparatus for use in communications between computers; business programmes for computers; cards for use with computers (encoded or magnetic); circuits for computers; component parts for computers; components for computers; computer software adapted for use in the operation of computers; computers; computers and electronic processing units); control apparatus for computers; data being electrically recorded for computers; data being magnetically recorded for computers; data being optically recorded for computers; data carriers for computers having software recorded thereon; data input apparatus for use with computers; data processing apparatus for use with computers; data recording materials for use with computers; data storage apparatus for computers; devices for use in the networking of computers; digital interactive video adaptors for use with computers; digital video adaptors for use with computers; digitizers for use with computers; electric devices for transmission of data between computers; electrical data input apparatus for use with computers; electrical data output apparatus for computers; electrical print out apparatus for use with computers; electrically punched (encoded) cards for use with computers; electrically punched (encoded) tapes for use with computers; electronic apparatus for linking televisions to computers; electronic circuits for use with computers; electronic memories for computers; electronic print out apparatus for use with computers; electronic printers for use with computers; encoded programmes for computers; encoded tapes for use with computers; fibre optics communications installations for use with computers; games software for use with computers; home computers; image processing apparatus for personal computers; input apparatus for transferring data from computers; input apparatus for transferring data to computers; input apparatus for use with computers; installations for use in the networking of computers; instruction programmes for use with computers; instruments adapted for use with computers; interactive computers for use in training; interfaces between application programs and firmware on real-time computers; laptop computers; linking units for computers; magnetically recorded data for computers; mainframes (computers); materials bearing data in encoded form for use with computers; peripheral control cards for computers; personal computers; personal computers incorporating computer software; personal home computers; plotters for computers; portable computers; power supplies for computers; pre-recorded data carriers for use with computers; print out apparatus for use with computers; printed circuit boards for computers; printed circuit boards for mounting in computers; process control computers; programmable computers; programs for computers; programs for computers (recorded); programs for personal computers; programs for setting up performance analysis in computers; programs in the form of printed matter for computers; programs written on data carriers for processing encoded data on computers; remote control apparatus connected by modems to computers; scanners for entering data into computers; security apparatus for computers; telecommunications apparatus for transferring data to computers; telecommunications apparatus for transmitting data for use with computers; transmitters for use with computers