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In electronic communication terms, bandwidth is the difference in the range of frequencies used on a particular transmission channel. Signal frequency is measured in hertz, which is the number of cycles of change per second (, 2004).

Bandwidth is also used in computer terminology as the amount of digital data, measured in bits (short for binary digits) per second (J. Hall, 2001: 247), that can be transmitted along a network. It ranges from narrowband (the conventional dial-up method on a computer) to highspeed delivery known as broadband which allows users to view pages on the world wide web faster, send and receive emails without delay, download files quicker and always-on access to the Internet (BBCi, 2003).

Feldman and De Wolk both use the common analogy of a ...

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