Information systems colIect, organize. store, processoretrieve and display information in different
formats (text. video, and voice), Information technology alIows very fast. automated
manipulation of digital data and their transformation from and to analogue,
Two basic technologies have been responsible for the development of the necessary hardware:
integrated circuits and digital communications, Parallel advances have been made in software,
particularly easy-to-use software products to create. maintain, manipulate, and query filesand
records. Many of these software programs are designed for use both by computer professionals
and enthusiastic amateurs. Another important factor is the development of computer networks