Data and Data signals - Data and Data signals Data is raw...

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Data and Data signals Data is raw facts and figures. They have no meaning . For e.g. 559873 is data. We cannot say what this number is. It can be your library number, a product number. Signal is an electric current used to convey data from one place to another. For example, if you want to call someone, over the telephone line there will be signals sent to connect to the other phone. Signal is therefore any kind of physical quantity that conveys information. For example, speech is a kind of signal, as it conveys information of one person to another through the physical medium of sound. Hand gestures are signals, too, conveying information by means of light. However, the term signal is primarily used in reference to an electrical quantity of voltage or current that is used to represent or signify some other physical quantity. Data signal is the method of how information is transferred in binary code or pulses. A pulse or
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  • Fall '09
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