How to analyze import export documentation

List of contents of this article:

• 1,How to analyze import export documentation What kind of tablet system is good?
• 2, Briefly describe the main components on the motherboard.
• 3, Ask for the structure diagram of the computer motherboard, should be detailed and clear

Which tablet system is good?

1. You can choose Android system, IOS system, Windows system, etc. Android system is the system commonly used in smartphones at present. Its main advantages are many applications and easy operation. However, Android tablets are mixed up and often overlap with smartphones, so you need to be careful when buying.

2. Personally, I think Android is better. At present, there are about three systems for tablets: Apple's OS, Android and Windows. At this stage, the playability and stability of Android are slightly stronger than that of Windows. Buying a Windows tablet with high performance is also a good choice.

3. At present, there are only three types of tablet systems, iOS, Android and Windows.iOS system The iOS system is exclusive to Apple tablets and iPads. If you buy a genuine Apple device, the operating system must be iOS. On the home screen, click to enter [Settings] - [General] - [About This Machine], and you can query the system version number.

4. Which tablet system is better depends on personal needs. If you prefer a simple, stable and highly integrated operating system, tablets are used to browse the Internet, send and receive emails, watch e-books, play audio or video and other functions, iOS may be a good choice.

5. The Android system is easy to operate, suitable for all kinds of people, and the system source is open, not as closed as ios. There are many Chinese games in the game, and there are many tablet brands to choose from. To put it simply, the Win8 system is like a computer system, which is more familiar to use.

6. Apple's IOS system is also the most famous system, which is unique to Apple's iPad tablet. As the world's largest and most well-known tablet manufacturer, Apple occupies most of the tablet market. Apple's tablets mainly focus on the middle and high-end markets, and the price is generally several thousand More than yuan.

Briefly describe the main components on the motherboard.

1. Baseband part Baseband chip and power management chip: responsible for coding. Radio frequency part RF processor and RF amplifier: realize the function of sending and receiving signals Other parts CPU, memory, various controllers (including touch screen, Bluetooth, WIFI, sensor, etc.).

2. Chipset. The two largest chips on the motherboard are the chipsets of the motherboard.It is divided into the north bridge (MCH: memory controller) and the south bridge (ICH: I/O control center). The key to the scientific and technological accountant and technical performance of a motherboard lies in the adoption of the Hechuo chipset, which can be said to be the soul of the motherboard. CPU slot/socket.

3. Generally, there are BIOS chip, I/O control chip, keyboard and panel control switch interface, indicator light plug-in, expansion slot, motherboard and plug-in DC power supply plug-in and other components. The most important component on the motherboard is the chipset.

求 the structure diagram of the computer motherboard, which should be detailed and clear

1. In addition, if the circuit board is to be used as a motherboard on the computer, it also needs to be made The same board type. Among them, the AT board type is the most basic board type, which is characterized by simple structure and low price. Its standard size is 32cmX30.48cm. The AT motherboard needs to be used with the AT chassis power supply, etc., and has now been eliminated.

2. In addition, if the circuit board is to be used as a motherboard on the computer, you need to make a different board type. Among them, the AT plate type is the most basic plate type, which is characterized by simple structure and low price. Its standard size is 32cmX30.48cm, the AT motherboard needs to be used with the AT chassis power supply, etc., and has now been eliminated.

3. The internal structure diagram and name of the desktop computer host are as follows: host box: the desktop computer host usually adopts ATX structure chassis. Motherboard: The motherboard is one of the most important components in the computer host. It is covered with various electronic components, such as CPU, memory, hard disk controller, power controller, serial port, parallel port, etc.