Introduction and explanation of computers (300 words)

The explanatory text about the computer is about 300 words. Urgent! ! !

With the advancement of technology, computers have become an indispensable part of our lives. It brings us convenience and expands our knowledge and horizons.

The computer is composed of three main components: monitor, host and keyboard, as well as some auxiliary hardware. The host is the core of the computer, similar to the human brain, responsible for managing all files and information, and completing the tasks you give the computer. Other family members are called "peripheral devices", which accept instructions from the host and complete the corresponding work. The importance of the host is self-evident. It plays the role of coordinating and allocating resources to ensure the normal operation of the entire computer system.

The monitor is the main output device, and its task is to show everyone what the Grand Manager is thinking. It is connected to the host computer's graphics card via a video cable. In the past, people mostly used 14-inch spherical monitors, but now 15-inch flat right-angle monitors are gradually becoming more popular. The screen of this kind of monitor is almost on a flat surface, unlike previous monitors, and the picture effect is greatly improved.

A keyboard is an input device that has the opposite function of a monitor. It is responsible for receiving user instructions for computer work. The user's instructions must be entered through the keyboard to be conveyed to the computer. The keyboard contains 26 English letters, 4 direction keys, 10 numeric keys and some indispensable function keys. Each of these buttons has different functions, and they are designed to facilitate users to operate the computer. Through the keyboard, the user can tell the computer what to do, allowing the computer's general manager to perform the corresponding task. The keyboard can be said to be the bridge between the user and the computer. It carries the user's instructions and provides input to the computer. The design of the keyboard allows users to input information quickly and accurately, improving work efficiency. In short, the keyboard is an indispensable part of the computer. It builds an important channel for communication between the user and the computer.

The mouse in the computer is a small tool. With the popularity of the Windows graphical operating interface, users can tell the computer to execute commands by clicking the left or right mouse button, without the need for keyboard input. Although it is small, it greatly improves the convenience of computer use.

The speaker is an exclusive device for the multimedia computer family. Nowadays, the multimedia computer family has attracted many computer enthusiasts with its features of audio and video. The sound card transmits the sound of the main pipe to the speakers, and the speakers convey it. Nowadays, the sound effects of multimedia computers are close to the level of home theaters.

Although printers are not part of the computer family, they are closely related to them. Like the monitor, the printer is also a commonly used output device, connected to the parallel port on the back of the host through a parallel port cable. Printers are mainly divided into three types: dot matrix printers, inkjet printers, and laser printers, and their performance increases step by step.

Computers are electronic computers invented by scientists after years of research. After several generations of development, modern computers have become versatile. It can connect to the Internet and allow us to enjoy rich and colorful online content. We can find our favorite books and articles in the library. In the chat room, we can communicate with netizens at any time, talk about topics that interest us, make more friends and understand their personalities.

Although your computer may seem sturdy, encountering an electronic virus can have serious consequences. However, by turning on anti-virus software, we can remove the virus as easily as giving medication to a patient.

Currently, technology is developing rapidly. I firmly believe that the Internet will be 100% virus-free in the next few years. At that time, we will not need to install so many anti-virus software to occupy memory, and the computer speed will be faster. Soon!

Computer explanatory text 400 words composition

Computers are well-known electronic products, but not everyone understands computers. Next, I will explain computers to you.

Overall, computers are divided into two parts, one is the hardware system and the other is the software system.

The hardware system is something that can be seen and touched. They are monitors, keyboards, mice, speakers, cameras, hosts, etc. There are power switch, reset button, hard disk indicator light and power indicator light on the host computer. The power switch is the largest button on the host, and its function is to turn the computer on and off; the reset button is usually used when the computer crashes, and the computer will restart when pressed; the small green light of the power indicator light will remain on after the computer is turned on; When reading and writing data on the hard disk, the hard disk indicator light will light up, which indicates the working condition of the hard disk.

The software system cannot be seen or touched. It controls various information on the computer, just like the various knowledge stored in our brains.

Software and hardware are two inseparable parts. Without either one, the entire computer cannot be used. Therefore, software is very important to computers and must not be missing. No matter how good your computer is, if you don't install software on it, it will be a piece of junk.

Computers have a wide range of uses. It is like a teacher who knows a lot of knowledge. When we encounter a question we don't understand, we can go online and "ask" it. It is both a teacher and a friend. When we are bored, we can play games and listen to music online.

Students, after listening to my explanation, do you know more about computers?

Explanatory text about computers, 300 words

With the development of technology, computers have entered many people's lives. Last year, I also got a computer, which brought me a lot of convenience, increased my knowledge, and broadened my horizons. The computer is divided into three main parts, the monitor, the host and the keyboard. The monitor is a large screen, like a television, that displays a variety of icons. The host is the "heart" of the computer. It has two eyes, one big and one small. One starts the program and the other restarts the program. The keyboard that contributes the most is the keyboard, which contains 26 English letters, 4 direction keys, 10 numbers, and some indispensable function keys. They each stay at their own posts and serve their masters. The computer also has a small tail, which is the mouse. The mouse is used to issue instructions, and the monitor will obey its instructions. This is the magical function of the computer.

Computers are electronic computers invented by scientists after years of research. After several generations of development, modern computers have become versatile. It can connect to the Internet and allow us to enjoy rich and colorful online content. We can find our favorite books and articles in the library. In the chat room, we can communicate with netizens at any time, talk about topics that interest us, make more friends and understand their personalities.

Although the computer is physically tough, if it encounters its nemesis - electronic virus, the consequences will be disastrous. However, you can open 360 anti-virus software and the virus will be eliminated, just like giving medicine to a patient.

Currently, technology is developing rapidly. I firmly believe that computers will continue to be used in the next few years.

Computer explanatory text 500 words

In modern society, computers have become an indispensable part of people's lives.

The computer is composed of two major parts: the host computer and the display screen. The host computer includes a central processing unit, motherboard, hard drive, CD drive and memory card. The function of the display screen is to display the picture and adjust the picture. The computer also has a keyboard, mouse, speakers...

There are many programs installed in the computer, including "My Computer", which stores files and has a hard disk. Shared pictures, shared music, etc. are saved in "My Documents". "Recycle Bin" is used to clean and recycle unnecessary files. The computer is also equipped with many convenient typing function programs, such as "Kingshan Text", which can perform mixed typesetting of graphics and text, and can also insert tables. Anti-virus software must be installed on the computer to ensure that the computer is not infected by viruses in the studio.

Using a computer, you can search for a lot of knowledge online, browse various websites, view various information, news, send and receive emails, chat online, and many other functions. The computer is like a knowledgeable scholar, answering people's questions about work, life, study and other aspects. How inconvenient it would be if people didn't have computers in their lives.

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