With the development of science and technology, computers have entered many people's lives. It has brought us much insight and broadened our horizons.
The computer is divided into three main components: monitor, host and keyboard, as well as some auxiliary hardware. The host is the chief manager of the computer family, which is equivalent to the human brain. It is in charge of almost all documents and information. It is also responsible for the work you want the computer to complete. It also assigns work to *'s family members, so *'s family members are called "peripheral equipment".
The display, whose task is to show what the big manager thinks, is a main output device. Before it was connected to the display card of the host computer by a video cable, everyone used a 14 inch spherical display, but now the 15 inch flat right angle display has gradually become popular. The screen of this display is almost on a plane, Unlike the previous monitors, the middle is not convex, and the picture effect has been greatly improved.
The keyboard, whose function is opposite to that of the display, is responsible for the "input" of the main manager. Only through it can the user's instructions be told to the general manager. Through it, the chief manager knows what to do. It contains 26 English letters, 4 direction keys, 10 numbers and some indispensable function keys. They keep their posts and serve the host.
The computer also has a 'small tail' - the mouse. With the popularity of Windows graphical operation interface in recent years, the keyboard is basically no longer used to enter commands. You can tell the chief manager what to do by operating the left or right button of the mouse. Although it is very small, it adds a lot of convenience to computer users.
The speaker belongs to the multimedia computer family. Now, the multimedia computer family with sound and pictures is growing, attracting many computer enthusiasts. The sound of the main manager is told by the sound card to the speaker, and then conveyed by it. Now the sound effect of the multimedia computer is more and more close to the level of the home theater.
Although printers do not belong to the computer family, they are closely related to them. Like the display, the printer is also a common output device, which is connected to the parallel port behind the host through a parallel cable. There are three types of printers: stylus printer, inkjet printer and laser printer, whose performance is gradually increasing.
Computer, also known as electronic computer, was invented by scientists after years of research. After several generations of "reproduction", electronic computers have become "versatile" computers. Although the computer is hard, the consequences will be unimaginable if it encounters its nemesis, electronic virus. But you can open the anti-virus software, and the virus can be eliminated, just like taking medicine for patients.
The computer is our friend, our teacher, and it leads us into another new world!