Difference: 1. Digital signals are discrete (discontinuous), while analog signals are continuous; 2. Digital signals only have two states: "0" and "1", while analog signals can be in any state. Numerical state; 3. Analog signals are represented by a series of continuously changing electromagnetic waves or voltage signals, while digital signals are represented by a series of intermittent changing voltage pulses or light pulses.
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Analog signal: refers to a signal in which the information parameters appear as continuous within a given range. Or within a continuous time interval, the characteristic quantity representing information can appear as a signal of any value at any instant. It is distributed in every corner of nature, such as daily temperature changes and continuous mountain peaks.
Digital signal: refers to a temporally discontinuous signal that people abstract. Its amplitude value is discrete, and the amplitude is limited to a limited number of values. Inside. For example, a binary code is a digital signal.
The main difference between analog signals and digital signals is that digital signals are discrete, while analog signals are continuous.
Analog signals are represented by a series of continuously changing electromagnetic waves or voltage signals; digital signals are represented by a series of intermittently changing voltage pulses (for example, we can use a constant positive voltage to represent the binary number 1, Use a constant negative voltage to represent the binary number 0), or a light pulse.
Digital signals only have two states: "0" and "1", while analog signals can be in any numerical state
Digital signals are digital. In computer systems, the CPU only recognizes " There are two numbers "0" and "1", so the digital signal needs to be represented by a binary number composed of "0" and "1". The analog signal is a continuously changing physical quantity, and its frequency, amplitude, and phase can continuously change with time.
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