The operation object of electronic digital computer

Digital electronic computer is the mainstream of electronic computer industry in the world today, and its internal processing is an electrical signal, which is called symbolic signal or digital signal. Its main feature is "discreteness", and there cannot be a third symbol between two adjacent symbols. Because of this difference in signal processing, its structure and performance are superior to those of analog electronic computers.

Electronic digital computer is a modern electronic computer for high-speed calculation, which can be used for numerical calculation and logical calculation, and also has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and automatically process massive data at high speed.

It consists of hardware system and software system, and a computer without any software is called bare metal. It can be divided into five categories: supercomputer, industrial control computer, network computer, personal computer and embedded computer. More advanced computers include biological computers, photonic computers and quantum computers.

Extended data:

main feature

1, fast operation speed: the internal circuit of the computer can complete various arithmetic operations at high speed and accurately. The operation speed of computer system is trillions of times per second, and the microcomputer can reach more than one billion times per second, thus solving a large number of complex scientific calculation problems. For example, the calculation of satellite orbit, the calculation of dams and the calculation of 24-hour weather all take years or even decades, while in modern society, it only takes a few minutes to complete with computers.

2. High calculation accuracy: the development of science and technology, especially the development of cutting-edge science and technology, requires very high calculation accuracy. The reason why the missile controlled by computer can accurately hit the intended target is inseparable from the accurate calculation of the computer. The average computer can have a dozen or even dozens of significant bits (binary), and the calculation accuracy can range from a few thousandths to a few millionths, which is beyond the reach of any calculation tool.

3. Strong logical operation ability: The computer can not only carry out accurate calculation, but also have logical operation function, which can compare and judge information. The computer can save data, programs, intermediate results and final results, and automatically execute the next instruction according to the judgment result for users to call at any time.

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