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ch.18 communication technology

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by

andrew denn

on 21 April 2010

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Transcript of ch.18 communication technology

Double click anywhere & add an idea Signals are anything that serves to direct, guide, or warn. A Code is a set of rules used to interpret data that convey information. Codes may be used to send signals. Telecommunication is sending and receiving signals by using electromagnetic means. Analog signals vary continuously within a range. Digital signals consist of separate bits of information. Ch.18.1 signals and telecommunication Ch.18.2 telephone,radio,and television
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