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Description
What happens when you dial a number ? How do messages travel between telephones ? Why are faxes useful ? Communicating today looks at important forms of communication and the technology and processes behind them . Each book covers how information and messages are created , sent and received , and why we use that form of communication . The series features : up - to - date information about technological developments and techniques clear , direct explanations of the underlying science a timeline of significant events and developments a glossary and an index .