Microfiche catalogues were similar to book and card catalogues but one could put much information in a small area It worked by having the images of the information stored on film and allowing the patron to access its information using a magnifying machine This form allows much more information to be stored in a smaller amount of area but the machines are usually limited in number and keep many people from being able to use it at the same time Computer catalogues first appeared in libraries in the early 1980s when more sophisticated searching was made available This form of cataloguing is easy to update when new materials are introduced into the library and with the use of the internet patrons can even access the catalogues of other libraries which is called union catalogues Libraries with small operating budgets have a hard time raising the funds necessary to convert existing catalogues into computer catalogues And since the advent of the internet many libraries allow patrons to view the librarys