According to the traditional generation method of electronic computers, what is the first generation to the fourth generation in turn?

According to the traditional generation method of electronic computers, the first generation to the fourth generation are: electron tube computers, transistor computers, small and medium-sized integrated circuit computers, large-scale and ultra-large-scale integrated circuit computers.

The electronic tube digital machine (1946- 1958) adopts vacuum electronic tube as logic element, mercury delay line as main memory, cathode ray oscilloscope electrostatic memory, magnetic drum, magnetic core and magnetic tape as external memory.

Transistor digital computer (1958- 1964), software operating system, high-level language and its compiler are mainly used in scientific calculation and transaction processing, and have begun to enter the field of industrial control.

Large scale integrated circuit computer (1970 till now), in terms of hardware, logic components adopt large scale and very large scale integrated circuits (LSI and VLSI). In software, database management system, network management system and object-oriented language have appeared.

Extended data:

The main features of electronic computers:

1, the operation speed is fast, and the computer is composed of internal circuits, which can complete various arithmetic operations at high speed and accurately. At present, the operation speed of computer system has reached trillions of times per second, and the microcomputer can reach more than 100 million times per second, which can solve a large number of complex scientific calculation problems.

2. The calculation accuracy is high, and the development of science and technology, especially the development of cutting-edge science and technology, requires 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.

3, strong logical operation ability, the computer can not only calculate accurately, but also have logical operation function, which can compare and judge information.

4. The storage capacity is large, and the computer's memory has memory characteristics, which can store a large amount of information, including not only various data information, but also programs for processing these data.

5. High degree of automation. Because computers have the ability of memory and logical judgment, people can put pre-programmed programs into computer memory. Under the control of the program, the computer can work continuously and automatically without human intervention.

6, cost-effective, almost every household will have a computer, more and more popular, popular, 2 1 century computer will become one of the essential appliances for every household.

The application of computer has penetrated into all fields of society, changing the traditional way of working, studying and living, and promoting the scientific calculation of society.

With the progress of science and technology and the rapid development of various computer technologies and network technologies, the development of computers has entered a fast and brand-new era. Computers have developed from single function and large volume to complex function, small volume and networked resources.

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