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Winn L. Rosch Hardware Bible, Sixth Edition by Winn L. Rosch

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Signal Characteristics

Communications simply means getting information—be it your dulcet voice, a sheaf of your most intimate thoughts, or digital data—from one place to another. It could involve yelling into the wind, smoke signals, express riders on horseback, telegraph keys, laser beams, or whatever technology currently holds favor. Even before people learned to speak, they gestured and grunted to communicate with one another. Although today many people don't do much more than that, we do have a modern array of technologies for moving our thoughts and feelings from one point to another to share with others or for posterity. Computers change neither the need for, nor purpose of, communications. Instead, they offer alternatives and challenges. ...

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