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According to the function: referred to as the sequential circuit, it is composed of the most basic logic gate circuit plus feedback logic loop (output to input) or device combination of the circuit, and the most essential difference with the combined circuit is that the sequential circuit has a memory function. Sequential circuits are characterized by:

The output depends not only on the input value at that time, but also on the past state of the circuit. It is similar to the inductor or capacitor circuit containing energy storage components, such as flip-flops, latches, counters, shift registers, memory and other circuits are typical devices for sequential circuits.

According to whether the circuit has integrated components, it can be divided into discrete component digital circuit and integrated digital circuit.

According to the integration degree of integrated circuits, they can be divided into small-scale integrated digital circuits (SSI), medium-scale integrated digital circuits (MSI), large-scale integrated digital circuits (LSI) and ultra-large-scale integrated digital circuits (VLSI).

According to the semiconductor devices that make up the circuit, it can be divided into bipolar digital circuits and unipolar digital circuits.

Digital circuits are also known as () circuits.

Correct Answer: Logic.

A circuit that uses digital signals to perform sail fluid arithmetic and logic operations on digital quantities is called a digital circuit, or digital system. Because it has the functions of logic operation and logic processing, it is also called a digital logic circuit. Modern digital circuits are constructed from several digitally integrated devices made in semiconductor processes.

A logic gate is the basic unit of a digital logic circuit. A memory is a digital circuit used to store binary data for a coarse object. On the whole, digital circuits can be divided into two categories: combinatorial logic circuits and sequential logic circuits.

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Summary. Digital circuits can be divided into two categories: combinatorial logic circuits and sequential logic circuits.

Digital circuits can be divided into two categories: combinatorial logic circuits and sequential logic circuits.

The output state of the lead at any time of the circuit is only determined by the combination of the input states at the same time, and the logic circuit that is not related to the previous state is called a combined logic circuit;

The output state of a circuit at a certain time is not only determined by the input state at that time, but also related to the previous state of the circuit.

To illustrate a digital circuit, you must first explain what an analog circuit is. Analog circuit is the use of the size of the signal (at a certain time) to represent the content of the circuit of the information, for example, the sound through the microphone into an electrical signal, the size of the electrical signal corresponds to the size of the electrical signal (the high and low value of the voltage or the magnitude of the current), the circuit used to process the signal (referred to as the power amplifier) is the analog circuit, the analog signal in the transmission process, is easy to be disturbed and distorted (not the same as the original).

Digital circuits are different, it does not use the strength of the signal size to represent the information, it uses the voltage or the presence or absence of the current or the on-off of the circuit to represent the information of 1 or 0, with a series of 1 or 0 codes to represent a certain information (because there are only 1 and 0 two numbers, so it is called binary coding, the circuit used to process the signal is a digital circuit, it uses the circuit on and off the circuit to represent the information 1 or 0

Strictly speaking, a digital circuit consists of two parts: a pulse circuit and a digital logic circuit. Pulse circuits are the study of pulse generation, transformation, and measurement. Although pulse waveforms come in a variety of shapes, they all have in common that the entire waveform is composed of several transient and steady-state processes.

In order to obtain the transient process, the pulse circuit must include two components: one is a switching circuit, which is used to turn on and off the circuit to destroy the steady state of the circuit to establish a transient; One is an inert circuit to control the transient process time. The switches we use are transistors, diodes, MOS transistors, and integrated circuits made up of them.

The commonly used Sui circuits are RC, RL, RLC and delay lines, among which RC circuits are the main ones.

Digital logic circuit is a science and technology that studies the coding, operation, memory, counting, storage, distribution, measurement and transmission of digital signals. Simply put, it is the science of using digital signals to calculate, control, and measure.

Digital circuits have the following advantages over analog circuits:

1. The circuit structure is simple, easy to manufacture, and easy to integrate and serialize production. Low cost, easy to use,2 A digital system composed of digital circuits, which works accurately and reliably, with high precision.

3 can not only complete numerical operations, but also can carry out logical operations and judgments, which is indispensable in the control system Therefore, digital circuits can also be called digital logic circuits.

This series of advantages of digital circuits over analog circuits makes it widely used in various scientific fields such as communication, automatic control, measuring instruments and computers.

The output state of a combinatorial logic circuit at any moment depends on the state of the input signal at that moment, regardless of the state in which its input signal was located as the previous circuit. Thank you.