What are the explanations for the origin of computers?

February 1946, 14, at Moore School of Electrical Engineering, University of Pennsylvania, there was a festive atmosphere everywhere. Many guests come here with excitement because they will attend the unveiling ceremony of the first modern electronic computer in human history. What is presented to people is a strange-looking and glowing monster. It is the world's first modern electronic computer "ENIAC". Computer, commonly known as computer, is an electronic computer for high-speed calculation, which can be used for numerical calculation, logical calculation and memory storage. 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.

The folding operation is very fast.

At present, the operation speed of computer system has reached trillions of times per second, and the microcomputer can reach hundreds of millions of times per second, which has solved a lot of complicated scientific calculation problems. For example, the calculation of satellite orbit, dam and 2 4-hour weather forecast. In the past, manual calculation took years and decades, but now it takes only a few days or even minutes to complete with a computer.

The folding calculation accuracy is high.

The development of science and technology, especially the development of cutting-edge science and technology, requires highly accurate calculation. 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.

Folding has the ability of logical judgment.

With the increase of computer storage capacity, more and more information can be stored and memorized. Computers can not only calculate, but also save data, programs, intermediate results and final results for users to call at any time; You can also perform arithmetic and logical operations on various information (such as language, characters, graphics, images, music, etc.). ) through coding technology, even reasoning and proof.

Folding has automatic control ability.

The internal operation of the computer is automatically controlled according to people's pre-programmed programs. According to the needs of solving problems, users design the running steps and programs in advance, and the computer runs in strict accordance with the programs, and the whole process does not need manual intervention.