When buying a computer, there are many matters needing attention. We should learn the correct purchase method to avoid being cheated. Here are my notes on purchasing computers, which I share with you!
1. Clarify user requirements
Before buying a computer, first determine the purpose of the user's purchase of the computer and what work the computer needs to do for it. Only by clarifying the purpose of your purchase can you establish a correct purchase scheme. The following lists several different computer application fields to introduce their respective purchase schemes.
(1) business office type
For office computers, the main purpose is to process documents, send and receive e-mail and tabulation. The required computers should be stable. In business office, it is very important for computers to run stably for a long time. It is recommended to configure an LCD display, which can reduce the harm to human body caused by using the computer for a long time.
(2) types of home internet access
In ordinary families, the main function of using computers to surf the Internet is to browse news, process simple words, play some simple games, watch online videos, etc. in this way, users do not need to configure high-performance computers. Choosing a medium and low-end configuration can meet the needs of users. Users can't feel the slow running speed of the software.
(3) graphic design type
For such users, because they need to deal with graphics color and brightness and have a large workload of image processing, computers with fast operation speed and high overall configuration should be configured, especially on CPU, memory and graphics card. At the same time, CRT display should be configured to achieve better display effect.
(4) types of entertainment games
Most of the currently developed games use three-dimensional animation effect, so such users have higher requirements for the overall performance of the computer, especially in terms of memory capacity, CPU processing capacity, graphics card technology, display, sound card and so on.
2. Decide whether to buy desktop or notebook
With the rapid development of microcomputer technology, the price of notebook computers is declining. Many customers who are about to buy computers are considering whether to buy desktop computers or notebooks. For the purchase of desktop or notebook, the following points should be considered.
(1) application environment
Desktop is inconvenient to move. For ordinary users or fixed office users, you can choose desktop. The advantages of notebook are small size and easy to carry. Users who often travel or mobile office should choose notebook.
(2) performance requirements
There is a certain gap in performance between laptops and desktops of the same grade, and the upgradeability of laptops is poor. For users with higher performance requirements, desktop is a better choice.
(3) price
The price of notebooks with the same configuration is higher than that of desktop computers. In terms of cost performance, notebooks can't compare with desktop computers. Therefore, for the purchase of price factors, desktop computers are relatively cheap.
3. Decide whether to buy brand machine or assembly machine
At present, there are two main categories of desktop computers in the market: one is brand computer, and the other is assembly machine (also known as compatible machine).
(1) brand machine
Brand computers refer to computers with registered trademarks and independent brands produced by computer manufacturers with certain scale and technical strength. Such as IBM, Lenovo, Dell and HP are all well-known brands at present. The brand machine has passed strict performance test before leaving the factory, which is characterized by stable performance, guaranteed quality and easy to use.
(2) assembly machine
Assembly machine is a computer that computer accessories sellers combine various computer accessories according to users' consumption demand and purchase intention. The assembly machine is characterized by flexible computer configuration, convenient upgrade and slightly higher cost performance than the brand machine. It can also be said that under the same performance, the price of the brand machine is higher. The choice of brand machine or assembly machine mainly depends on the user. If the user is a computer beginner and does not have a deep grasp of computer knowledge, then buying a brand machine is a good choice. If you are familiar with computer knowledge and intend to upgrade your computer at any time, you can choose to assemble the machine.
4. Understand computer performance indicators
For a computer, its performance is not determined by an index, but by the overall configuration of each part. To measure the performance of a computer, we mainly look at the following performance indicators.
(1) CPU operation speed
The computing speed of CPU is an important index to measure the performance of computer. It is usually described by the main frequency. Now the popular dual core CPU in the market adopts multi-core technology while improving the main frequency speed. The higher the overall main frequency, the faster the operation speed.
(2) graphics card type
The graphics card processes the image data sent by the CPU into a format that can be received by the display, and then sends it to the display screen to form a picture. NVIDIA and ATI graphics cards are popular graphics chips in the market. The capacity of independent graphics cards is used as the scale to measure the performance index of graphics cards. At present, the independent display 256MB is the mainstream graphics card in the market.
(3) memory capacity
Memory is the memory directly accessed by the CPU. All programs to be executed and data to be processed in the computer must be read into the memory first. The size of memory reflects the computer's ability to store information in real time. With the upgrading of operating system and the increasing functions of application software, the demand for memory capacity is increasing.
There are many types of notebooks. How to choose a suitable notebook?
As long as you need any computer on the home page, ask the price in different stores. For example, I want Lenovo's y480n-ifi. Now the price is close to 5099. But many stores give you different prices, and the prices are different in different stores. And sometimes businesses say they want invoices, which can be 100 to 200 cheaper. In fact, this is a trap. If you are in a store with good reputation, you may have some conscience; In shops with average reputation, it can be cheap without a ticket, but once the computer breaks down, you get it to the maintenance department and people ask you to get the invoice. If you don't have it, you can't guarantee it.
For example, when I watch in different electronic cities, most of the prices are different. In this way, we should ask more questions, and one store will say that this is not good or this is out of stock. Next, let's study why it is "not available".
No definition is:
Possibility 1: it's really out of stock, but this may be less, because considering the long listing time, it's impossible to be out of stock.
Possibility 2: the profit of this machine is relatively small. I want to sell some books with high profit. This technique is too much in the computer city. Don't be fooled.
Maybe 3: it's available, but I'll politely say that it won't arrive until a few days later, and then introduce a higher profit model to you.
In fact, these words of knowledge computer city can be summarized in one sentence in the above article: know your own configuration; Refer to the network quotation (however, the quotation of the network provider in the computer city is about 100-300 yuan less); Ask about more shops. When the merchant says what's wrong with this computer, he resolutely says not to change it; After placing an order, remember to see the production date of the book clearly. Some businesses will give you the warehouse pressing goods, so remember to read it; After purchase, be sure to test on the spot and see if there are any bad spots or bright spots on the screen (generally, a software will be started, and there are several colors on the software. Generally, the computer city doesn't understand some. As long as the color detection is turned on, it will be swept by; when the color detection software is turned on, be sure to carefully look at each color to see if it is comfortable or there are any bad spots or bright spots), and see whether the configuration is different from the configuration of the machine. Ask about the warranty period.
First, look at the label on the back of the notebook
There are a lot of labels on the back of genuine laptops, of which the most important one is the model label of laptops. The model label usually indicates the brand of this laptop, from which series to the model, such as brand ASUS SERIES V series model v450. The other is the label on the back of the notebook, and check the relevant information and quotation of the same model on the Internet to see whether it is in line with what the salesperson told you. The most important thing is that now when buying notebook computers, they are machine printed invoices and directly report to the Administration for industry and commerce. There are relevant machine information on the invoices, such as model and service number. These must be indispensable. If there is a problem, ask the Administration for Industry and Commerce for help, and others can get evidence!
II: the basic configuration of the machine will be labeled on the front of the base
How about the configuration of notebook computers? Now regular notebook production companies will mark the configuration on notebook computers for consumers to understand the basic configuration of the machine, such as CPU, graphics card, memory module, operating system, etc. Related reading: how to see notebook computer configuration!
As long as the buyer looks at the detailed configuration list in the machine according to the basic configuration, if there is a slight error, you can not. Unless you specially ask the merchant to replace you with a high configuration, the unpacking machine is the original configuration, and there can be no configuration other than the configuration on the label. When the buyer finds this situation, he must pay attention!
III. advantages of machine design in medium and advanced configuration
As the saying goes, the more advanced things are, whether in quality or in design and appearance, they will be liked. Why is there a difference in price between ordinary cars and high-end cars? The main differences are: comfortable, beautiful and good quality!
The same is true for laptops. The design of medium and high-end laptops is very humanized. First of all, it will greatly attract your attention from the appearance. When you open the laptop, the feeling of touch is different from that of ordinary computers. It is smooth and solid. The materials are made of polymer materials. Most people know its good. In addition, Generally, computers with medium and low configuration will be brought up with the base when opening the screen cover, This is rarely the case with medium and high-end computers (the author works in the computer repair department and has been in contact with all kinds of notebook computers. Generally, for notebook computers above 4200, the base will be firmly adhered to the desktop. Moreover, in the design of the way to open the cover, designers will think of what you can't expect. For example, when the cover is opened, it's not very easy to open, but when it is closed, as long as you press it gently with your hand, the cover will come down and cover smoothly without any sound. In order to prevent this kind of work When the computer meets the rude owner, the screen is damaged due to excessive force when covering the cover. This design is not only conducive to the service life of the LCD screen of the notebook computer, but also has a great embodiment of the cutting-edge of science and technology in human mechanics. Therefore, the high price of course matches the goods well. Buyers should pay attention to whether the notebook is very attractive when purchasing high-end notebooks. Hehe, This is also the personal experience gained from long-term contact with notebook computers, which is only for reference!
At present, the price of mainstream laptops (including independent graphics card configuration) is about 4000 yuan. For most friends, laptops at this price are more practical. With mainstream processors and independent graphics cards, they will perform well in both HD and games.
IV: online shopping needs a reliable platform
Some friends will say, I think online shopping. At present, online shopping laptops really need a lot of benefits, but many users are worried about what to do if they can't see which labels. It doesn't matter. Just choose a reliable platform. By the way, I think good computer shopping platforms, such as Jingdong, Suning and Taobao Mall, can be visited when you have time. The price is hundreds of yuan cheaper than physical stores. For online shopping, we must pay attention to the website platform. For example, it must be an online mall with popular company and good user reputation. For some unknown websites, it is best not to buy. Although the price is very low, most of them are liars, Therefore, the choice of online shopping platform is very important.
Guess you like:
1. Several precautions for novices to buy and assemble computers
2. Precautions for purchasing computer monitor
3. What are the precautions for buying a laptop?
4. Precautions for using notebook computer
5. What should we pay attention to when purchasing notebook computers