Computers can be divided into digital computers and analog computers according to their working principles. Digital electronic computers are the mainstream in the electronic computer industry in the world today. Their internal processing is an electrical signal called a symbolic signal or a digital signal. It has the characteristics of fast operation speed, high operation accuracy, and strong versatility. An analog computer is a computer that uses a continuously changing analog quantity as the object of calculation based on the principle of similarity; the analog computer uses electronic circuits to form the basic computing component.
The operating environment of this article: Windows 7 system, Dell G3 computer.
Computer, commonly known as computer, is a modern electronic computing machine used for high-speed calculations. It can perform numerical calculations, logical calculations, and also has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed.
Computers can be divided into digital computers and analog computers according to their working principles.
Analog computer
An analog computer is a computer that uses a continuously changing analog quantity as the object of operation based on the principle of similarity. Analog computers use electronic circuits as their basic computing components. It consists of computing components, control components, question setting boards, input and output devices, etc. The concept of simulation is included in the solution using the principle of similarity, so it is called an analog computer. It is based on parallel computing and has fast calculation speed. It appropriately combines arithmetic units with fixed functions, so the program is relatively simple, but the flexibility of problem-solving is relatively poor.
Analog electronic computers came out earlier. The electrical signals used internally simulate actual signals in nature, so they are called analog electrical signals. Analog electronic computers have poor accuracy in processing problems; all processing processes require analog circuits to realize, the circuit structure is complex, and the ability to resist external interference is extremely poor.
Digital computer
Digital electronic computers are the mainstream in the electronic computer industry in the world today. What they process internally is a type of electrical signal called symbolic signals or digital signals. Signal.
Its main feature is "discrete". There cannot be a third symbol between two adjacent symbols. Due to this difference in signal processing, its composition and performance are superior to analog electronic computers.
Features:
1. Fast operation speed
2. High operation accuracy
3. Strong versatility
4. Memory function and logical judgment function
5. Automatic control capability
Explanation:
Digital computers include giant, large, medium, small, micro and single-chip types, etc. Computers often refer to the last two.
Microcomputer is also called microcomputer or microcomputer. Supercomputer is mainly defined in terms of performance.
In the 1970s, computers with a computing speed of more than 10 million operations per second, a storage capacity of more than 10 million bits, and a price of more than 10 million U.S. dollars were internationally considered supercomputers; some people also regarded computers with a computing speed of more than 10 million times per second. An electronic computer that executes 10 million instructions per second and has a main memory capacity of several megabytes is used as a supercomputer.
In the 1980s, the standard for supercomputers was a digital electronic computer with a computing speed of more than 100 million times per second, a word length of 64 bits, and a main memory capacity of 4-16 megabytes. China's Galaxy Computer is a supercomputer.
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