What Is the Difference Between Analog and Digital Signals?

Photographer Freddy Olsson, Helsingborg, Sweden/Moment Open/Getty Images

The difference between analog and digital signals is that an analog signal is a continuous electrical message while digital is a series of values that represent information. Analog is conveyed by electrical current variations. Digital signals are relayed as a series of values that a device can read, such as a digital television.

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