
6: Communications
Objectives
After reading this chapter, you should be able to:
• outline the principles of analogue and digital communications
• explain the importance of technological convergence for
communications
• describe the main types of communications systems, including
computer-to-computer communications, computer networks,
telephone networks, and broadcast networks
• describe a range of telecommunications services, such as facsimile,
electronic
mail,
and on-line databases.
Scenario
In your role as youth club leader, you may want to set up
communications links between your computer and other equipment,
including other computers, i ...