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Analog Signal Definition |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: Analog Signal: An electrical signal that varies continuously over an infinite range of voltage or electrical current values, as opposed to a digital signal, which varies discretely between two values, usually one and zero. An analog signal changes continuously as it is sent. Digital signals change between two values and never have the values in between. Most voice transmission is analog (though this is changing). It is easiest to think of analog signals as sine waves of various sizes. Because the phone system uses analog signals most of the time, modems are needed to change the digital signals used by computers into the analog signals used by the phone system. |
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