2. The application of information technology includes computer hardware and software, network and communication technology, application software development tools, etc. Since the popularization of computers and the Internet, people have increasingly used computers to produce, process, exchange and disseminate various forms of information (such as books, business documents, newspapers, records, movies, TV programs, sounds, graphics, images, etc.). ).
3. Information has timeliness: information often only reflects the state of things at a certain moment and will change with time. For example, weather forecast, traffic map, invoice exchange, stock exchange and so on all have strong timeliness. ?
4. Information is valuable: As a special resource, information has its corresponding application value. For example, "After three months of war, a letter from home is worth Wang Jin". ?
5. Relativity of information value: for different information recipients, the value of information is different, which is closely related to the needs and quality of information recipients. For example, for a tourist who wants to go to other places, all kinds of information about tourist destinations, such as tourism resources and meteorology, are very important to them; For a person who lives only locally, the meteorological information in other places may be useless at all. ?