Apparatus controlled by computers for analysing samples; apparatus for collecting encoded data for supply to computers; apparatus for controlling computer programmes; apparatus for controlling the operation of machines (computer); apparatus for data communications between computers; apparatus for inputting information into a computer; apparatus for linking computers; apparatus for linking computers into networks; apparatus for receiving information from a computer; business programmes for computers; cabinets adapted to hold computers; circuit boards for use with computers; circuits for computers; communication devices for linking computer networks; communications electronics for computers; communications processing computer software; component parts for computers; components for computers; computer add-on boards; computer apparatus; computer apparatus for process control; computer apparatus for remote billing; computer apparatus for remote meter reading; computer apparatus for the control of data; computer apparatus for transmitting data; computer control apparatus; computer control devices; computer control units; computer controlled automatic testing apparatus; computer controllers; computer data input apparatus; computer data recording instruments; computer display instruments; computer hardware; computer input apparatus; computer input instruments; computer installations for the communication of data; computer installations for the processing of data; computer installations for the storage of data; computer interface apparatus; computer measuring devices containing data; computer network apparatus; computer operated digitisers; computer outputting apparatus; computer programs for data processing; computer programs for electronic image processing; computer programs for providing a graphical presentation of data; computer programs for scientific data analysis; computer programs for the control of telecommunication apparatus; computer programs for the control of telecommunication instruments; computer programs for use in farming; computer programs in the field of design analysis; computer related data communication apparatus; computer software; control apparatus for computers; data input apparatus for use with computers; data processing apparatus for use with computers; data storage apparatus for computers; electrical control apparatus being computer operated; housings for computers; industrial computer software programs; industrial controls incorporating computer apparatus; instruments adapted for use with computers; microprocessor based computer compatible apparatus; process computers; scanners for entering data into computers