Want to know some computer knowledge

Computer main components: monitor, host (CPU, motherboard, hard disk, memory, CD-ROM, graphics card, sound card, network card), keyboard, mouse, speaker, external printer, scanner, etc.

The major consists of five parts: arithmetic unit, controller, memory, input equipment and output equipment.

How computers work: Let's briefly talk about our most common X86 computers.

First of all, we press the power button, the computer is turned on, and the power part energizes all the components. This is a pulse boosting process, which is very fast. Then each component returns an instruction to the BIOS (Basic Input and Output System) responsible for the motherboard self-test, indicating that the power-on is successful and ready.

Then the BIOS performs a system self-check to check whether the memory, cpu and other components work normally in detail. After passing the self-check, the ownership of startup is handed over to the startup sector on the disk. The data in the boot sector will guide the computer to execute the most basic boot instructions, and then start the existing operating system (OS) on the disk. After the operating system is successfully started, a man-machine interface will appear. At this time, the computer will accept the instructions given by the operator, process them and finally return the results to the operator.

After the work is completed, the operator gives a shutdown instruction and the computer shuts down.

There are two kinds of software: application software and system software. If you want to break it down, there will be more, such as games, office, operating system and so on.

The website in Changzhou looks at personal habits. If you want to get information, Sina is better. Www.sina.com.cn or www.qq.com. Looking for www.baidu.com or www.google.com. To download, you usually go to Huajun Software Park or Pacific Computer Network, and you will know more online.