Bandwidth
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Bandwidth is a measure of how much information can go through a system. There are two different cases:
- Analog signals
- Digital signals
Analog Signals have the form of an electromagnetic wave. They go up and down. At some point, they pass an axis of symmetry. This is called the x-axis. The bandwidth of an analog signal is simply the distance between two such traversals through the x-axis. This rate is measured in Hertz.
In digital systems, there is no signal in wave-form. In those systems, the bandwidth is measured in baud, and stands for the signal rate.
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