What you can do:
1, typing and typesetting (word processing software such as OFFICE is required);
2. Drawing and photo processing (photo processing software such as PHOTOSHOP is required);
3, small games (of course, you have to install game software, unless you just "dig mines" ...);
4. surf the internet, browse news and find information;
5. Watch dumb movies and TV online (if there are no speakers and sound cards);
6. Online stock speculation
……
What can't be done:
1, listening to music and writing music files (if there is no sound card and headphones);
2, print text materials (need a printer);
3. Scan pictures or words (need a scanner);
4. Make video calls online (microphone, camera, etc. are required)
……
The use of computers
Our door is now in the age of science and technology, and the application of computers is everywhere. This chapter can help you understand the application of computers in different fields.
3. 1 education
Computer as a learning tool
Computer-aided learning is to use computers as learning tools. At present, many computer-aided learning softwares help students learn different subjects by means of words, images, sounds, images and animations. At the same time, you can test what you have learned and get the test results immediately.
A large number of learning resources can also be found on the Internet, and students can also learn some extracurricular knowledge by themselves.
Computer as a teaching tool
Computers are also good teaching AIDS. By using computers, teachers can show the teaching content more clearly, explain some concepts that are difficult to explain and show some experiments that are difficult to carry out in practice with more interesting multimedia (images, videos, animations, sounds and words) effects, making learning more interesting.
Computer as a school administrative tool
With the help of computers, school administration can be more efficient. Schools can use computers to store and process a large number of materials, such as each student's personal records, class lists, examination results of various subjects, books and materials in the library, etc.
3.2 entertainment
Computer game
Computer games can be divided into adventure games, action games, educational games, intellectual games, simulation games, strategy games, etc., and most of them contain a lot of visual and acoustic effects. Good computer games can arouse the imagination of game participants and provide them with the fun of challenges and the joy of success.
Film and television production
Using computers, we can make special sound and visual effects in movies or TV programs; At present, many sci-fi or action movies are produced with the help of computer technology, which brings us new forms of entertainment.
Interactive TV
Now, we only need to connect a control box, and we can sit at home and enjoy the video-on-demand service. You only need to choose the movie you like to watch, and the computer system will send the video through the telephone line for you to watch on the TV at home.
3.3 Household appliances
Household appliances
Many computer programs are controlled, such as regular video recording by video recorder, laundry program of washing machine, automatic temperature control of refrigerator and air conditioner, and heating program of microwave oven.
Smart home
The so-called smart home means that through programming, voice control or telephone control, all the appliances in the house are controlled by computers and switched on and off on time.
3.4 Transportation
Traffic monitoring
Traffic lights, electronic road tolls and land, sea and air traffic monitoring systems are all controlled by computers.
allocate
The deployment of railway systems, cars, ships and planes is all controlled by computers.
ticket business
Ticket sales systems such as automatic ticket vending machines and Octopus are all controlled by computers.
3.5 communication
telephone
The telephone system in most countries has been computerized, which has further improved the sound quality, lines and working environment of the telephone building.
E-mail software allows people to send and receive messages on the computer network. It is a fast, economical and convenient method of information transmission.
Real time communication
Conduct online games, chat rooms, ICQ, VoIP, video conferences, etc. Videoconferencing allows people to make face-to-face calls with others through computer networks.
3.6 commerce
financial industry
The operation and records of branches of financial institutions are all connected by computers. You can use ATMs to deposit, withdraw or transfer money. Now you can use telephones, televisions or computers to connect to the computer system of banks, thus
1. Query the expanded account balance;
2. Carry out inflation;
3. Get financial information.
Sales industry
Department stores and supermarkets use computerized point-of-sale terminals to read the information (name and price) of goods, print invoices, control inventory, and connect the system with various point-of-sale terminals to control the inventory level and order quantity.
service sector
Many service industries have begun to use computers to improve efficiency. Hotels can use computers and the Internet to book rooms, restaurants can use computers to place orders and settle accounts, travel agencies can use computers to book air tickets for customers, hotels and so on, and shopping companies can use the Internet for shopping services.
3.7 Office applications
Office automation is the use of computerized equipment to handle office work. The following types of application software are commonly used in general automated offices:
Word processing software
Word processing software can be used to create, edit, proofread, format and print documents.
spreadsheet
Spreadsheet software can calculate, analyze data and display information.
database
Database software can store, sort out and update a large amount of data.
Presentation software
Presentation software can display reports or introduce materials to attendees in a meeting.
3.8 Industry
In industry, many task sequences can be assisted by computers. There are two main areas:
Computer aided design
Engineers often use computers to design new products. With the help of computer-aided design program, the design work can be accelerated, and the design can be tested by computer before the product is officially produced.
Computer aided production
Computers can manufacture products according to the design, and operators can program computerized numerical control machines to manufacture very complex and accurate parts and improve product quality.
3.9 science
weather prognosis
The Observatory uses a large computer system to process a large amount of data, make weather maps and issue weather forecasts to the public.
scientific research
Scientists use computer systems to process and analyze a large number of data obtained from scientific research.
simulation experiment
Computers can simulate the process of experiments. Using the simulation experiment, we can:
Reduce the experimental cost
Replace dangerous experiments
Conduct experiments that are difficult or impossible to complete in reality.
3. 10 government
The government of every country is the biggest user of computers, which stores a large amount of information, including national personal, education, taxation, finance, national defense, and some confidential information.