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2025-01-18 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
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This article mainly introduces how computers are classified according to the form of processing data, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.
According to the morphological classification of processing data, computers can be divided into: 1. Digital computers are electronic computers that operate and store values in digital form inside the machine; 2. Analog computers are based on the principle of similarity. a computer in which a continuously changing analog quantity is used as the object to be operated; 3.
According to the morphological classification of processing data, computers can be divided into digital computers, analog computers and hybrid computers.
Analogue computer
An analog computer is a computer that uses a continuously changing analog quantity as the object to be operated according to the similarity principle. The analog computer uses electronic circuits to form the basic computing components. It is composed of operation unit, control unit, question board, input and output equipment and so on. In solving the problem with the similarity principle, the concept of simulation is included, so it is called analog computer. It is based on parallel computing and has high computing speed. It combines the fixed arithmetic unit properly, so the program is relatively simple, but the flexibility of solving problems is poor.
The accuracy of the analog electronic computer is poor; all the processing processes need analog circuits to achieve, the circuit structure is complex, the ability to resist external interference is very poor.
Digital computer
An electronic digital computer is an electronic computer that calculates and stores values in digital form inside the machine. The representation of numbers is often binary. It is composed of arithmetic unit, controller, memory, input and output devices, input and output channels, etc. According to the main performance indicators, minicomputers and microcomputers.
Electronic digital computer is famous for its fast operation speed, high calculation accuracy, large amount of information storage, high degree of automation, logical judgment and so on. It can be used not only for numerical calculation and data processing, but also for automatic control and information processing. Electronic digital computers have been widely used in atomic energy, nuclear weapons, missiles, space technology, aviation, metallurgy, chemical industry, petroleum, machinery, water conservancy, electric power, transportation, meteorology, textile, health and other departments.
Hybrid computer
Hybrid computer (hybrid computer) is a computer system that combines analog computer with digital computer in system simulation. Hybrid computers appeared in the 1970s. At that time, the digital computer is serial operation, the operation speed is limited, but the operation accuracy is very high, while the analog computer is parallel operation, the operation speed is very high, but the precision is low. The combination of the two can learn from each other, so the hybrid computer is mainly suitable for the simulation of some complex systems with strict real-time requirements. For example, in the missile system simulation, the continuously changing attitude dynamics model is realized by the analog computer, while the navigation and orbit calculation are realized by the digital computer.
Features:
The connection system is sometimes called a hybrid analog computer when it is combined with an analog computer. In addition to the operational components of a general analog computer, it also adds logic components (such as with gates, OR gates, non-gates, triggers, registers, counters), as well as high-speed digital-to-analog converters and high-speed analog-to-digital converters. Their output and input are connected to an additional digital choreography board. With the continuous development of electronic technology, hybrid computers are mainly used in aerospace, missile systems and other real-time complex systems.
Hybrid computer has the characteristics of both digital computer and analog computer: fast operation speed, high calculation accuracy, strong logic and storage capacity, large storage capacity and strong simulation ability.
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