The evolution of computing tools has gone through different stages, from simple to complex, from low to advanced, for example, from knots in Knoting Notes to calculation, abacus slide rule, mechanical computer and so on. They have played their respective historical roles in different historical periods, and also inspired the development ideas of modern electronic computers.
From 65438 to 0889, herman hollerith, an American scientist, developed a spreadsheet based on electricity to store calculated data.
1930, American scientist Vaneva Bush built the world's first analog electronic computer.
1On February 4th, 946, the world's first electronic computer "Electronic Digital Integral Computer" customized by the US military came out at the University of Pennsylvania. ENIAC was developed by Oberding Weapon Test Range to meet the needs of trajectory calculation. This calculator uses 17840 electron tubes, with a size of 80 feet ×8 feet and a weight of 28t (tons). The power consumption is 170kW, the operation speed is 5000 times per second, and the cost is about $487,000.
The advent of ENIAC is of epoch-making significance, which indicates the arrival of the era of electronic computers. In the next 60 years, computer technology will develop at an amazing speed, and the cost performance of any technology can be improved by 6 orders of magnitude within 30 years.
The development trend of computers:
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.
The future of computer is full of variables, and there is no doubt that the performance will be greatly improved, but there are many ways to realize the leap of performance. However, the dramatic improvement of performance is not the only way for computer development. The development of computers should be more and more humanized, and at the same time, we should pay attention to environmental protection and so on.
Since its appearance, the computer has experienced four generations of machine language, programming language, simple operating system and modern operating systems such as Linux, Macos and Windows, and its running speed has also been greatly improved. The operation speed of the fourth generation computer has reached billions of times per second.
Computers have also developed from being used only for military scientific research to being owned by everyone. The powerful application function of computer has created a huge market demand. In the future, computer performance should develop in the direction of miniaturization, networking, intelligence and giant.