Assembly desktop configuration problem, SLR digital camera problem, purchase server problem.

First, the desktop configuration issues are as follows:

CPU AMD Athlon II X2 255 (box) ￥400

AMD brand-new dual-core, AM3 interface, clocked at 3. 1GHz, integrated with 2M L2 cache, with excellent overclocking performance and high cost performance.

Main board Huaqing 770DE3L￥399

Huaqingyuan ASUS subsidiary first independently operated the leading brand of the second-line motherboard, mainly targeting the low-end market, with high cost performance. The motherboard adopts 770 independent +SB7 10 independent chipset, supports Phenom II X6 6 core processor, supports Huaqing UCC core CPU power supply, and adopts solid-state capacitor to ensure the stable operation of your whole machine.

* Memory Kiki DDR DDR 31333 2g150+050

One of the three high-end memory brands, a single 2G DDR3 1333. Qi Zhi has always been of high quality, excellent workmanship and better durability. Alternate location: Kingston, Yu Zhan.

* Seagate hard disk 500GB 7200. 12 16M (serial/bulk load) ST3￥270.

Seagate 500G hard disk, SATA 3Gbps interface, rotating speed of 7200RPM, supporting NCQ technology, stable data transmission rate 160MB/s, cache 16MB. If you are not at ease, you can change it: WD 500GB 7200 is changed to 16MB blue disk, and the idea is not to turn the green disk too slowly.

Graphics card yingchi GT220 comes standard ￥370.

The graphics card specification is 5 12MB GDDR3 128-bit, and the overclocking version belongs to the GT220 high-performance model. 2+ 1 phase power supply, strong overclocking, long-term stable performance, leading by 5%. Simin VF630A mute fan has a maximum of 28 decibels, and the 6 cm fan has strong heat dissipation, which can cope with the current mainstream online games.

LCD Great Wall M1932 660

19 inch LCD, a domestic first-line brand. TFT is adopted as a new generation LCD panel, with powerful technology engine and excellent quality. 16.7M is true color, and the color picture is vivid. The display ratio of 16: 10 is closer to the golden section size, so it is more comfortable to enjoy the video and the effect is more perfect.

* Chassis Parkson game C404￥80

Anyway, the budget is not much, so it is better to spend money on the cutting edge.

Power supply great wall mute master ATX-350SD 160

Because of Intel's outstanding performance in power consumption, the overall configuration power consumption is not high, we sent you a domestic first-line power supply brand Great Wall Power Supply with a rated power of 270W, which can fully meet your power supply needs.

AMD platform with a total amount of about 2,500 yuan and high cost performance.

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*CPU Intel Pentium dual-core E5400 (boxed) $400

Intel classic dual-core E5 series CPU, clocked at 2.7GHz and integrated with 2M L2 cache, has excellent cost performance and strong stability.

* motherboard Zappo X-Blue p43d 3 L 399 dollars.

The leading brand of the second-line motherboard adopts Intel P43+ICH 10 chipset, supports ATI CrossFireX graphics card crossfire technology, and is more stable and compatible with discrete graphics cards.

* Memory Kiki DDR DDR 31333 2g150+050

One of the three high-end memory brands, a single 2G DDR3 1333. Qi Zhi has always been of high quality, excellent workmanship and better durability. Alternate location: Kingston, Yu Zhan.

* Seagate hard disk 500GB 7200. 12 16M (serial/bulk load) ST3￥270.

Seagate 500G hard disk, SATA 3Gbps interface, rotating speed of 7200RPM, supporting NCQ technology, stable data transmission rate 160MB/s, cache 16MB. If you are not at ease, you can change it: WD 500GB 7200 is changed to 16MB blue disk, and the idea is not to turn the green disk too slowly.

Graphics card yingchi GT220 comes standard ￥370.

The graphics card specification is 5 12MB GDDR3 128-bit, and the overclocking version belongs to the GT220 high-performance model. 2+ 1 phase power supply, strong overclocking, long-term stable performance, leading by 5%. Simin VF630A mute fan has a maximum of 28 decibels, and the 6 cm fan has strong heat dissipation, which can cope with the current mainstream online games.

LCD Great Wall M1932 660

19 inch LCD, a domestic first-line brand. TFT is adopted as a new generation LCD panel, with powerful technology engine and excellent quality. 16.7M is true color, and the color picture is vivid. The display ratio of 16: 10 is closer to the golden section size, so it is more comfortable to enjoy the video and the effect is more perfect.

* Chassis Parkson game C404￥80

Anyway, the budget is not much, so it is better to spend money on the cutting edge.

Power supply great wall mute master ATX-350SD 160

Because of Intel's outstanding performance in power consumption, the overall configuration power consumption is not high, we sent you a domestic first-line power supply brand Great Wall Power Supply with a rated power of 270W, which can fully meet your power supply needs.

The Intel platform with a total amount of about 2500 yuan has strong stability and low power consumption.

Second, the problems of SLR are as follows:

1. SLR is a camera with interchangeable lenses. Different lenses have different uses. For example, a wide-angle lens is suitable for landscape photography, and a macro lens can magnify tiny objects and is suitable for photographing flowers, plants and insects. Therefore, after buying a SLR, you should buy a lens according to your shooting needs. 2. The service life of the lens is not strictly regulated. Unless it is physically damaged, the general lens can be used for several years or even more than ten years. The key lies in the daily maintenance of lenses to prevent mildew and dust. 3. There is no need to hold the camera all day for fear of being caught in the dust. Especially the newly bought lens, I can't stand the sight of ash. I once removed the lens to clean up the dust, but in a few days, the dust came back. I'm too lazy to care now, just wipe the surface clean, there's no need to make a scene unless I have to! What's more, the lens is a tool used, not a handicraft! It's really hard to pursue an ashless lens. Buying a professional high-sealed camera can certainly prevent the invasion of dust, but it is not necessary for amateurs like us! As for the problem of water inflow, as I have already said, there is no need for ordinary consumers to buy professional waterproof cameras. As long as you don't put the camera in the water, always put the camera in a dry and constant temperature environment, generally there will be no serious consequences! The experience of water invasion also varies with cameras and specific events. Once high-end electronic products flood, the lens is estimated to be laid off. In short, be careful at ordinary times, and there will be no accidents. It's much easier to get into the dust than into the water! 4. If it is used to take photos of everyday life, there is no need to have a professional lens. Generally, digital SLR cameras are equipped with some standard zoom lenses when they are sold, but these lenses are cheap and have normal performance, so it is enough to take daily images! 5. Different lenses are suitable for different photography needs! You are absolutely right! Wide-angle landscape photography is the main way to shoot landscapes, so wide-angle lenses are generally used. Traveling abroad, a simple, portable, light-weight and high-quality lens should be the focus of consideration. Portrait shooting is generally the only way for photographers. Generally, the focal length of portrait lens is between 50- 135mm. As for macro photography, the common method is to use some zoom lenses with macro mode to shoot. However, due to the proportional relationship of zoom lenses, macro photography cannot be fully utilized, so it is generally necessary to choose special macro lenses to shoot. 6. As for the entry-level camera, that's a matter of opinion! Regardless of the price factor, Canon EOS 1000D is the lowest-priced entry-level digital SLR camera in Canon EOS series, with the imaging capability of 10 million pixels. The effective pixel is 1065438+ 100000, and the total pixel is 105000. The maximum size of the image can reach 3888×2592, and it can also provide more accurate focusing efficiency through the starting point focusing function. The reference price is about 3600 yuan (18-55mm is a mirror). Sony α200 is equipped with a CCD image sensor (APS-C format, size 23.6× 15.8mm) with pixels as high as 10.2 million, and an improved Bionz image processor, which is very suitable for entry-level photographers. Sony Alpha 200 also has excellent anti-shake performance. Through the displacement device of the image sensor, the photos you take are absolutely clear enough. The reference price is about 3299 yuan (18-70mm lens)! The most basic camera accessories are commonly used memory cards, camera bags and tripods.

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Third, buy a server:

What problems should enterprises and webmasters pay attention to when choosing servers?

Usually it is the choice of hardware platform, operating system, database, Web server, Web application software, etc. Should be considered when building a website. According to the website type, website scale, capital budget and experience, it is not a simple matter to choose the right product from many schemes, but also to consider future maintenance and update.

When choosing a server, we should not only consider the current demand, but also consider the functions that may be needed in the future, because replacing a Web server is usually much more difficult than installing standard software, which will bring a series of problems, such as whether the page script needs to be changed, whether the application server needs to be changed, and so on. Most Web servers are mainly optimized for one operating system, and some can only run on one operating system, so when choosing a Web server, it needs to be considered in combination with the operating system. Moreover, general brands of Web servers have their own set of Web server system software, and the standards, applications (including database applications) and security protocols supported by this software should be considered. Generally speaking, the following aspects should be considered:

1, consider your own needs, including the actual needs now and the expansion needs of applications and future applications. Some enterprises blindly demand high allocation, which is actually incorrect.

Step 2 perform

Because the data types provided by Web servers to their clients are usually confidential.

The number of concurrent users supported is the easiest to think of. The ability to support the number of concurrent users of a Web server refers to the number of user connections that the Web server can allow at the same time.

Responsiveness-In fact, this parameter is related to the number of concurrent users that can be supported as mentioned above. The faster the response speed, the more visits can be supported per unit time, and the faster the response speed of user clicks.

3. Choose a service provider with a business license

Our country requires Internet operators to have the People's Republic of China (PRC) Telecom and Information Service Business License, otherwise it is illegal to operate. Once inspected, service providers without this license will be ordered to close down, and it is very dangerous to rent virtual hosts from service providers without licenses.

4. Safety

Whether the security system can carry out all-round computer room monitoring 24 hours a day, 7x. It should mainly consider two aspects: one is to protect the confidential information of the Web server; The second is to prevent hacker attacks.

5, the difficulty of management

The management of Web server contains two meanings: first, whether the Web server is easy to manage; The second is to use the Web interface for network management. The management interface used to manage the Web server usually includes command line, Telnet, HTML and window-based applications.

6. Technical support and after-sales service

It depends on the service system and technical strength of the server manufacturer, and whether the IDC manufacturer is a regular company. If there is any senior certification in this field, it can help you file for free. If something goes wrong, the normal application of the company's e-commerce is likely to be affected if the timely and reliable technical support from the manufacturer is not available. Whether there is a professional technical team, after-sales service is very important. Don't finish everything before, and don't worry about the later maintenance.

Server leasing; Pay attention to four points:

1. Speed: the bandwidth resource status of the selected computer room and the fiber access status of the computer room bandwidth.

Services: including the computer room service and after-sales service of the cooperative company. As the saying goes, service to home, worry and effort!

Price: It depends on the bandwidth of the rented computer room and the price of the renter. Whether it can constitute the highest cost performance. This is crucial.

4. Enterprise qualification: IDC customer case, peer evaluation; Relevant certificates of enterprise qualifications, etc. . .

Today: IDC industry is not well integrated. Market chaos. Make a better choice. Choosing a better service is the key.