What information capabilities have satellites, computers and communication networks expanded? Give examples.

Television, satellite, computer and self-communication network are important components of modern information technology.

Communication network, multimedia online database and computer constitute a comprehensive network information superhighway, which provides people with rapid communication of voice, data, graphics and images and realizes high-speed enjoyment of information resources.

There are more and more kinds of communication services. The traditional basic communication services such as telephone and fax have developed into communication services such as data, graphics and images, videophone, conference TV and multimedia.

Extended data:

Communication networks can be classified according to the following different attributes:

1, classified by telecommunication service types: telephone network, radio and television network, data network, fax network, integrated service network, multimedia network, intelligent network, signaling network, synchronous network, management network, computer communication network (local area network, metropolitan area network, wide area network) and so on.

2. Classification by transmission medium: wired network (wire, cable, optical cable, etc. ), wireless networks (long wave, medium wave, short wave, ultrashort wave, microwave, satellite), etc.

3. Classification by communication scope: local communication network, local telephone communication network, long-distance communication network and international communication network or local area network, metropolitan area network, wide area network, etc.

4. According to the object of communication service, it is divided into public network and private network.

5. According to the forms of communication transmission and signal processing, it can be divided into analog network, digital network and hybrid network.

6. Classification by communication terminals: fixed network and mobile network.

7. Classification according to communication nature: business network, transmission network and support network.