Briefly describe the working principle of the computer.

When the computer is running, it first takes out the first instruction from the memory, and after it is decoded by the controller, it takes out the data from the memory for the specified operation and logical operation, and then sends the result to the memory according to the address. Next, take out the second instruction and complete the specified operation under the command of the controller. Go on like this. Until a stop command is encountered.

Programs are stored like data. It is the most basic working principle of the computer to take out the instructions step by step according to the programming order and automatically complete the operations specified by the instructions.

Extended data:

Characteristics of computer

1, fast operation speed: the internal circuit of the computer 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. 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.

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.

4. Large storage capacity: The internal memory of a computer has memory characteristics and 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 the computer has the ability of memory and logical judgment, people can put the pre-programmed program group into the computer memory, and under the control of the program, the computer can work continuously and automatically without manual intervention.

6. High cost performance: Almost every household will have a computer, which is becoming more and more popular. In the 2 1 century, computers will surely become one of the indispensable appliances in every family.

Baidu Encyclopedia-Computer Principles