As a hardware engineer, there are two basic circuits that must be faced: analog circuits and digital circuits. Let's take a look at the basics of these two circuits.
As a hardware engineer, there are two basic circuits that must be faced: analog circuits and digital circuits. Let's take a look at the basics of these two circuits.
First, the definition and characteristics of analog circuits and digital circuits:
Analog circuit (electronic circuit)
Analog signal
An electronic circuit that processes analog signals. The word "analog" mainly refers to the reproduction of a voltage (or current) proportional to the true signal.
Its main features are:
1, the value of the function is an infinite number;
2. When the image information and sound information change, the waveform of the signal also changes, that is, the information to be propagated by the analog signal is included in its waveform (the information change law is directly reflected in the amplitude, frequency and phase of the analog signal) .
3. The primary analog circuit mainly solves two major aspects: 1 amplification, 2 signal sources.
4. The analog signal has continuity.
Digital circuits (circuits for arithmetic and logic operations)
Digital signal
A circuit that performs arithmetic and logic operations on digital quantities with digital signals is called a digital circuit, or a digital system. Because it has logic operation and logic processing function, it is also called digital logic circuit.
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