What are the main applications of computers Give examples of the important effects that computers ha

Numerical calculations. The earliest application field of computer is scientific computing, scientific computing is the earliest application field of computer, refers to the use of computer to complete numerical calculation problems raised in scientific research and engineering technology, in modern science and technology work, the task of scientific computing is a large number and complex.

Using the computer's high computing speed, large storage capacity and continuous computing ability, it can solve various scientific computing problems that cannot be completed manually, such as engineering design, weather forecasting, rocket launch, etc., all of which require the computer to undertake a huge and complex amount of calculation.

Precautions for computer use are as follows:

1. Place the computer at a slight distance away from the general reading distance, at the top of the computer screen, slightly below the eye level, and you will feel more comfortable when using the computer.

2. Place the input text next to the phosphor screen, as close as possible, to reduce neck and eye movements, as well as attention changes.

3. The light should be soft, and the reflection and glare of indoor lights should be minimized. Sometimes, when the indoor light is too bright, consider placing a microfilter in front of the phosphor screen.

4. When there is dust on the fluorescent screen, it must be wiped to increase visibility.

The earliest application areas of computers were: aScientific computing.

Scientific computing is the earliest application field of computers, which refers to the use of computers to complete numerical computing problems proposed in scientific research and engineering technology. In modern scientific and technological work, the tasks of scientific computing are numerous and complex.

By using the computer's high computing speed, large storage capacity and continuous computing ability, it can solve various scientific computing problems that cannot be completed manually. For example, engineering design, weather forecasting, rocket launches, etc., all require a large and complex amount of calculations undertaken by computers.

Key features:

Fast arithmetic speed: The computer is composed of internal circuits, which can complete various arithmetic operations at high speed and accurately. Today's computer systems have a computing speed of trillions per second, and microcomputers can reach more than 100 million times per second, enabling a large number of complex scientific computing problems to be solved.

For example, the calculation of satellite orbits, the calculation of large dams, and the calculation of 24-hour weather can take years or even decades, while in modern society, it only takes a few minutes to complete with a computer.

High accuracy of calculations: The development of science and technology, especially cutting-edge science and technology, requires highly accurate calculations. The accuracy of a computer-controlled missile against a predetermined target is inseparable from the computer's precise calculations.

d. Numerical calculation.

The earliest application of computers was numerical computing. Computers were invented for the needs of scientific computers, and the first generation of electronic computers were also designed for calculating ballistics and firing tables, so the earliest application field of electronic computers was numerical calculations. The evolution of computing tools has gone through different stages from simple to complex, from low-level to high-level, such as from knots in "knotted rope notes" to abacus, abacus slide rule, mechanical computer, etc.

They have played their respective historical roles in different historical periods, and at the same time, they have also inspired the development of modern electronic computers.

The earliest application of computers was numerical computing.

Extension] The Atanasoff-Berry Computer (ABC) is the world's first electronic computer, designed in 1937 by John Vincent Atanasoff of Iowa State University and his graduate student Clifford Berry. And in 1942 it was successfully tested.

In the 30s of the last century, Atanasov, a Bulgarian of Bulgarian origin, was an associate professor in the physics department of Iowa State University, teaching students how to solve systems of linear partial differential equations, and had to face complicated calculations, which were boring work ...... that consumed a lot of timeAtanasov then developed new ideas, and from 1935 began to explore the possibility of using digital electronics for computational work.

After two years of repeated research and experimentation, the idea became clearer and clearer, and the design was generally thought out. But he also needed someone who was smart, mechanical, and hands-on to make the invention, so he approached Clifford Berry, a graduate student who was studying for a master's degree in physics at the time.

The two men finally built a complete prototype in 1939, proving that their concept was correct and achievable. The prototype was called ABC, which stands for the Atanasoff-Berry Computer that included their names.

This computer is a combination of electronics and electrical appliances, the circuit system is equipped with 300 electronic vacuum tubes to perform numerical calculations and logical operations, the machine uses capacitors to store values, the data input adopts the punch-hole reading method, and also uses the binary system. Therefore, the design of ABC has included the four most important basic concepts of modern computers, and in this sense it is an electronic computer in the true modern sense.

d. Numerical calculation.

The earliest application field of computer is numerical computing, and the scope of data processing is relatively wide, and the application in the field of computer is gradually advancing.

d In the earliest days, computers were only used for numerical computers, as evidenced by the early binary**.

This influence is too much, simply put, it has greatly changed the production and lifestyle of the people! Comparing 20 years ago with 100 years ago, this gap and difference comes out.

Do you know what are the application areas of computers?

BAI is now inseparable from computing in all walks of life.

machine; Application areas of DU computer:

1.Manufacturing DAO industry.

Computer-aided design computer-aided manufacturing computer-integrated manufacturing system capacity 2Commerce.

Retail, EDI, E-commerce.

3.Banking & ** Industry.

E-money Internet Banking & Mobile Payment **Market Informatization 4Transportation industry.

Traffic Monitoring System Seat Reservation & Ticketing System Global Positioning Satellite System Geographic Information System Intelligent Transportation System (ICS) Intelligent Transportation System (GPS) Intelligent Navigation System (GPS)

5.Office automation and e-government.

6.Educate. 7.Medicine.

8.Scientific research.

9.Arts and entertainment.

Introduce the six application fields of computers: scientific computing, data processing, artificial intelligence, computer-aided design and manufacturing, process control, and multi-technology.