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Choose a tablet or what you need to pay special attention to before buying a tablet. What parameters to choose a car navigator

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Buying a car is a big step, and choosing a car is a long and responsible process: choosing a car that will satisfy the needs of the buyer is by no means as simple as we would like. Even one missed trifle is able to destroy all the euphoria from the purchase. How to choose a car to fit your needs and what parameters should you focus on? AutoCode knows the answer to these questions!

What questions to ask yourself before purchase

Finding a car "for yourself" is a task that requires preparation, especially if this is your first car. To choose a car was easier, identify the needs to develop them, answer a few simple questions:

What is a car for? For trips between home, work and supermarket? Or for trips to the country? Or maybe you are looking for a car with your own image? Choose the goal for which you are going to buy a car - this will help in the future selection!
How much are you willing to spend? Each has a budget framework from which it is impossible to break out. Determine how much you are willing to spend on buying a car - this will significantly limit the search.

What type of body do you need? Sedan, hatchback, station wagon, crossover - among this variety, choose what suits you. Find a compromise between visual beauty and functionality. Do not focus only on the appearance!
How many passengers? Comfort in the car is necessary not only for the driver. If you regularly ride with passengers, consider their wishes.
"Mechanics" or "automatic"? Oh, this eternal argument that does not subside! Choose based on operating conditions. Need to travel a lot around the city? Automatic transmission in traffic jams is more convenient. Are you going to travel a lot along country roads? "Mechanics" will help save fuel and better control the car.

The number of criteria and wishes, on the observance of which depends on how suitable the car is for us, is practically impossible to calculate. Choosing a car according to its parameters is a painstaking and time-consuming process, and the wrong approach to this important stage will spoil the pleasure of the new car. What are the criteria for looking for a "dream car"?

Class and characteristics of the car. We recommend you start choosing it with this parameter - focus on the number of passengers and the purpose of travel (transportation of people and transportation of goods are two big differences!).
Cost. Like it or not, there’s no getting away from the price. At the same time, buyers often forget that the costs associated with the purchase are not limited to the cost of the machine itself. Do not forget about consumables, maintenance, re-registration costs, insurance ... We recommend that a beginner buy a cheaper car. As a rule, the life of the first car is the shortest due to the driver’s small skills.

Manufacturer. It’s up to you to decide which car brand to choose (for someone, the image is important, which will perfectly complement the badge on the hood, someone is devoted to your favorite brand - there are many reasons). The main thing that you should not forget is the availability of service centers in your city: nobody wants to go a few hours to change the oil, and a tow truck to the nearest specialized center will cost "a pretty penny" if the car suddenly "gets up" and there is a need take him away.
Engine capacity. The dynamics of acceleration, fuel consumption, the amount of transport tax - it all depends on what is under the hood of the car. Arm yourself with a calculator and calculate which option will be your compromise between the cost and driving experience.
Drive unit.Each type of drive has pros and cons, and each driver has its own wishes and preferences. Think about what is right for you.
Transmission. We already talked about it in the previous section - there is nothing to add!
Security. In an emergency, the life and health of the driver and passengers depend on how well the machine is equipped with regard to safety. Airbags, pretensioned belts, ABS, additional sensors and smart anti-collision systems, reinforced body elements ... Do not save on your own safety!
Additional options. A stereo system, air conditioning, cruise control and other additional features that can be dispensed with, but which make trips more convenient and comfortable, are an important selection criterion. Most likely, when you buy, you will again have to compromise - you will not be ready to sacrifice something, but you can safely refuse something.

Made a list of options for finding a new car? Excellent - the hardest part behind, there are only a couple of useful tips.

After drawing up the criteria by which you selected candidates for the title of “car for yourself”, find information about them on the Web and study it thoroughly. Perhaps you did not even know about the "pitfalls" that could fundamentally change the decision to buy and make you choose more. If it is possible to make a test drive on the car that you are going to buy, do it. You can argue about ergonomics, comfort and other abstract values \u200b\u200bfor a long time - only at the wheel you will understand whether this car is suitable for you or not. And do not believe the acquaintances who prove that their choice is the best: we are all different people, and that which is vital for us will not play any role for anyone else.

DVRs are very popular among car owners. In addition to their main purpose (assistance in recovering events in the event of an accident), they also have a number of additional functions that make driving even more convenient and comfortable.

Such demand encourages manufacturers to produce a wide variety of registrar models, equipped with various functions and significantly different in cost. How to choose a DVR for a car without getting confused in the offered assortment?

Of course, you can go to a specialized store asking “help me choose a DVR” and hope for the good faith of sellers, but it’s much better to try to figure it out on your own. How to choose a good dvr?

There is a lot of information on the Internet on this topic, you can easily find an information article or just see a review. The DVR in the car is selected based on its functions, price-quality, budget available.

Car DVRs are small devices often equipped with a display. Their main function is to record in real time while the vehicle is in motion. In the minimum configuration, the car DVR has:

Additional functions at the registrar may be present or absent, including the price of the device, depending on this, as well as on the manufacturer.

How to choose a DVR for a car? There is no definite answer to this question, since the goals for which the device is purchased may vary. It is absolutely not necessary to buy the best recorder if its main purpose will be ordinary video recording.

An inexpensive video recorder can do this task well.

It will be correct to choose a DVR according to the parameters. It is based on them that you can decide which DVR is better to choose.

What are the criteria by which to make a choice?

First of all, it is worth remembering that this device is necessary for video surveillance. Therefore, the main quality by which you can choose a car DVR should be the ability to record video in proper quality.

It, in turn, depends on the software capabilities of the device (video in HD or Full HD), as well as on the specific optics installed in this model.

Full HD image quality is most preferred, but the price of recorders that can record video in this format is higher.

The most modern models write images in Super HD format, it is quite possible that in 2017 they will completely replace the matrices that write Full HD, and besides, you can always switch from a higher quality video to a lower one in the settings.

The easiest way to evaluate the optical properties of a recorder is to watch video on the Internet.

At the same time, you should definitely look for recordings made on a particular recorder at different times of the day and in various weather conditions in order to evaluate how the mechanism controls the image brightness.

Glass lenses have higher characteristics, while plastic lenses become cloudy over time and lose their properties.

Viewing angle

Another characteristic of video recording is the viewing angle covered by the recorder. The optimal value in this case will be 130-140 degrees.

There is simply no need for a larger corner: this will provide slightly more information, but the video quality will deteriorate significantly.

On the other hand, it is also undesirable to choose a smaller angle: in this case, the neighborhood is not likely to get onto the recording and important information may be missed. For example, a DVR with a low viewing angle may miss the “main road” sign mounted on the side of the road, and in the event of an accident it will be more difficult to prove their case.

Record

Obviously, the video shot by the registrar must be recorded somewhere. The vast majority of models of car DVRs use a micro SD memory card. In rare cases, you can find models that write an image to an SD card or hard drive for a DVR.

The standard amount of memory for the DVR is 16 gigabytes, but almost all varieties are able to support larger cards. Also, some types of recorders are equipped with built-in memory, but its volume is extremely small and it is not recommended to use it.

To increase the amount of information recorded on the card, you can change the video settings by choosing the most convenient and suitable video format, frame rate and the type of encoding and compression used.

Obviously, HD video will take up less space than Super HD, for example, and video with a stream of 60 frames per second - more than with a stream of 30 frames.

Unfortunately, the volume of even the largest memory card is limited and ends sooner or later. Since the registrar should not stop recording for a minute, the manufacturers chose this solution: after the space on the card expires, the oldest files are overwritten. The stream itself is divided into parts, the duration of which in most cases is adjustable. The length of one fragment is from 1 minute to 15 minutes.

The five-minute dubbing cycle is considered optimal for city traffic. When hit in an accident, in five-minute fragments it will be much easier to navigate than in many short one-minute fragments, in addition, it is likely that the whole incident will go into this segment. On the other hand, during excursion trips or talking with the traffic police inspector, it is more advantageous to set the dubbing cycle to 15 minutes so that the information is recorded in a continuous stream.

The selected DVR in the car must be securely attached to the windshield of the car, otherwise it loses its meaning: with shaking and vibration, the video quality noticeably deteriorates, and it becomes impossible to parse the specific details of what happened.

The vast majority of models are now equipped with a suction mount. The advantages of this method are obvious: if necessary, the registrar is easy to transfer to another car, as well as remove it at night for better safety (unfortunately, this technique causes increased attention of criminal elements).

The disadvantage of this method is that in the cold season to fix the device can be very difficult.

When choosing, you need to pay attention to the bracket: on the one hand, the fewer parts in it, the less the device will undergo shaking, but on the other hand, it is recommended to choose a bracket with a 360-degree rotation. Such a structure will allow, if necessary, to photograph what is happening in the cabin or on the side of the car (for example, traffic police inspector).

Another drawback of the suction cup may be its massiveness. In combination with a large recorder, the system can cover a sufficiently large area of \u200b\u200bthe windshield, thereby impairing the driver's view while driving.

The second common option is double-sided tape. The recorders equipped with it are usually small in size, often even without a screen. In this case, it is not assumed that the device will be removed and transferred. They do not attract much attention, but they can still become the subject of theft, and besides, they cannot be turned to change the view.

Relatively recently there were registrars for a car, which are mounted directly on the mirror. They are almost imperceptible, and in addition do not block the view of the driver.

GPS sensor

This function is optional, but it can significantly simplify the life of the driver. With the help of software settings, the DVR will be able to warn about approaching cameras and radars, show the trajectory of movement.

The main function of this sensor is to display speed in real time and on recording. On the one hand, this is a definite plus: such an argument can easily break most of the charges and prove the driver’s innocence in a given situation.

Such a function is quite convenient if the maximum permissible speed on a given section of the road is constantly displayed on the screen. But, on the other hand, in case of violation of the speed limit, such a record can also testify against the driver.

The optimal solution in this case are models in which you can disable the recording of speed on video when exceeding a certain mark or at will.

G-sensor

This feature is also present in the vast majority of models. Otherwise, it is called a “shock sensor." Its essence lies in the fact that upon impact (the strength of which must be calibrated in advance), the recording of this time interval cannot be deleted from the memory card except for formatting. This protects the driver from accidentally destroying important information that can help restore the picture of an accident.

This function can work independently in some models, which is very useful if the car was hooked in the parking lot and disappeared from the scene.

Screen

Strictly speaking, there is no need for a screen for video recording, however, its presence seriously facilitates the life of the driver.

Firstly, if you have a screen, you can best install the camera, adjust its viewing angle. Secondly, the screen can be indispensable in a dispute with the traffic police inspector (for example, in a situation where he unfairly accuses the driver of a violation).

In this case, it will be possible to immediately see the record of what happened, after which questions are usually removed. But the screen size is not important: in case of conflict, a small screen is enough to establish a chain of events, and it’s much more convenient to browse the full recording on a computer. There is no need for a large screen.

Length of cable

In most cases, the power of the recorder comes from the cigarette lighter. Therefore, it is imperative to pay attention to the length of a standard cable when choosing: a too short size will limit the possibilities of device location, and too long will interfere with your right hand. The optimum cable length is one meter.

Other functions

Car recorders can be equipped with other functions: an additional slot, into which a second memory card is inserted, LED backlighting, photography, an HDMI connector, interior recording and many others. However, often these opportunities are nothing more than marketing moves, without bringing any real benefit, but at the same time significantly increasing the price of an auto-video recorder. These features are best avoided when buying.

Manufacturer

Which is the best dash cam manufacturer? Now the highest quality is demonstrated by Korean companies. The DVR from China and Taiwan has approximately the same reliability, but the latter look more attractive due to the higher quality case materials. Which company to take the device depends on personal preferences.

It is not necessary to purchase products of a well-known brand if there is no need for a truly functional and durable device. In ordinary household situations, inexpensive Chinese registrars will quite cope with their function, although their quality will be somewhat lower. Depending on the needs, the answer to the question of which DVR to choose will vary.

Perhaps every owner of a personal computer wants his PC to be powerful and not cost too much. When choosing components, you need to pay attention to many different indicators. The PC processor is one of the most important parts that directly affects the performance of the device.

When choosing a central processor for a personal computer, the user should pay attention to the following parameters: manufacturer, connector type (CPU platform), clock frequency, bit depth, number of cores.

There are two main processor manufacturers: AMD and Intel. Some users believe that Intel processors are superior to their competitors in everything, but such people are deeply mistaken. There is no big difference between manufacturers, since all processor models are manufactured at a high-tech level.

Connector type

The type of connector is one of the most important parameters. In the event that you skip it or forget about it, then the purchased processor may not fit the motherboard, that is, the processor will not be installed in a special socket that is on it. As a result, the socket number (its model) should completely coincide with the socket located on the motherboard of the computer. For example, Intel has one of the most popular ones: LGA 2011, LGA 1155 (LGA 775 and LGA 1156 are almost never used today). AMD has connectors: AM3, Socket AM3 + and Socket FM1.

Clock frequency

The processor clock speed is perhaps one of the most famous parameters when evaluating or selecting it. It depends on it the number of operations that the processor will be able to carry out in a certain unit of time. An example is a processor with a clock speed of 3.4 GHz, that is, in a second it can process 3 billion, 400 million clock cycles.

It is worth noting that the clock frequency is far from the only parameter that affects the performance of the PC. That is, if the clock frequency is high, and other components (for example, a video card, RAM, etc.) are not the most popular, then in the end the computer is unlikely to work very quickly. It must be remembered that the best way out of the situation is if all the components of the PC will work in unison.

Capacity

The processor capacity is also an important parameter. There are several: 32-bit, 64 and 128-bit. The latter option is extremely rare, so consider it does not even make sense. For a regular user, a 32 or 64-bit system is enough. When choosing, it is worth remembering that 32-bit systems support a maximum of 3.75 GB of RAM, and if there is more on a personal computer, you need to buy a processor with a 64-bit system.

Number of Cores

The choice of a processor with a certain number of cores directly depends on the type of tasks that will be solved using a PC. For example, if the user works exclusively with text editors or “lightweight” multimedia applications, then 2 cores are quite enough. Otherwise, you need to purchase a processor that has a large number of cores.

How to choose a laptop to meet all your requirements? Or just not to make a mistake in choosing the price-quality ratio?

A laptop - a self-contained computer and a mistake in the choice will be more painful than the choice of a separate component on a home computer.

With the help of this guide you will find out all the necessary characteristics that you should pay attention to when choosing a laptop. Also, this article will help you not to overpay money for functions that you don’t need, and maybe it will tell you what can be safely saved in your case.

Laptop is selectable for different purposes. Of especially priority: long battery life, replacement home computer(or as a second computer), for multimedia(movies, music) or just All in one*.

* all in one

Laptop for work and travel must combine such characteristics as: large working hours battery low heat dissipationgood display, sturdy construction and wear resistance, compact size, extended communication opportunities.

A laptop as a replacement for a home computer and for stationary use, it should have such characteristics as: a large display, a variety of communication ports, a convenient keyboard, a good processor and video card, a capacious hard disk and a lot of RAM.

Laptop for multimedia tasks - Must combine such things as: a large and high-quality display, a powerful processor (for playing movies in HD), a good sound system and a capacious hard drive.

AllIn One – quite rare instances that combine all the characteristics of these categories, thanks to the competent power management and the overall reasonable design of the laptop. Often have a video subsystem from two graphics cards (built-in and discrete), which can significantly increase the laptop’s battery life. These laptops are equipped with processors that have advanced technologies to reduce power consumption when using battery power. They usually have rechargeable batteries with aboutwith the largest number of sections and increased capacity.

All-in-one notebook by Asus:

High-quality display, advanced communication capabilities (including a variety of ports), high-quality finishing materialsinteresting design, a well-thought-out system for removing hot air - all this also applies to this class of laptops.

The only disadvantage of this versatility is their price. Not everyone is ready to part with so much money if most of the opportunities are not used.

Let's start with the manufacturers.

Laptop manufacturers .

The quality of the installed components and the longevity of the laptop depend on the manufacturer. Even if they are identical in content. After all, it is the manufacturer who thinks everything from the cooling system to the display quality and Bios firmware.

A very good indicator of the quality of a laptop is if the manufacturer also produces motherboards, cooling systems, displays, or possibly other electronic components ( Asus, Msi , Toshiba, Sony, Samsung other). In such laptops, in most cases, you can be sure of the reasonableness of most of the filling and cooling systems. It is worth paying attention to the manufacturer’s experience in the manufacture of laptops, but this is not a guarantee of quality. Some manufacturers produce low quality products very stably.

Also, each manufacturer has its own features, which are often used in laptops from all price categories. For example: attractive appearance and high-quality display (Sony); not easily soiled, scratch-resistant glossy case (Asus); better reception (Lenovo); non-heating keyboard (Asus) and so on.

Display

If you want to sit at a laptop for more than 2 hours a day, then you should make sure that the laptop uses a high-quality display. It is also worth considering if you are working with graphics or just want high-quality color reproduction and wide viewing angles.

In these cases, you should look towards laptops with matrices. They provide accurate color reproduction, and high viewing angles. About types of matrices, you can read in our material:

Now there is a tendency to produce displays for laptops only with, when instead of cold cathode lamps, backlighting is used. This allows you to make the top cover of the laptop much thinner and significantly reduces power consumption.

On the one hand, it’s significantly reduces power consumption, increases brightness and makes the laptop cover much thinner. On the other - the light from the diodes is larger annoying eyes, due to a more unusual light for the eye, and a lower flicker frequency than the classic backlight (cold cathode lamp). However, there are more pluses and they are much more significant for a mobile device. Therefore, laptops are increasingly used LED display backlight.

Another important factor for the possibility of long work on a laptop without fatigue for the eyes is a matte display. Many are often faced with a choice - matte or glossy.

The only plus of the glossy display is a clearer picture and slightly more vibrant colors.

Of the minuses - very strong soiled(your prints will last a long time); glare, which all the time make the eyes focus on different points, which inevitably leads to faster fatigue; the worst viewing angles(again due to glare); inability to work if behind bright source Sveta.

Iron or notebook interior.

Availability powerful(multi-core, with high frequency) cPU primarily affects: the overall speed of the OS and its interface, video encoding, the speed of working with photos, archiving, the painless launch of several applications at the same time, increased performance in games and other applications that depend on processor resources. You can read about the choice of processor in our material:

It is also worth noting that in laptops – not used logic sets on IntelAtom. If you looked just like that, that. Which, although it will faithfully be used for Internet surfing, office applications and at the same time hold the charge for a long time, it is not capable of more (there are of course exceptions, but they are always very close in price to a full-fledged laptop).

It is always better to take a full budget laptop than an expensive netbook. After all, even the weakest, full-fledged dual-core processor (the same Celeron CULV 1.2Ghz), will be more powerful than the most powerful 2-core Atom with technology Hyper threading.

If you intend to periodically use the laptop for games, encoding music and video, watching high-definition video ( HD), work in Photoshop and other graphics programs, then in any case, you can’t do without the integrated graphics solutions from Intel (X 3100, Intel GMA****, 4500HD etc).

For such purposes, availability is required. discrete (not built into the chipset, with its own video memory) from manufacturers such as AMD and Nvidia. This is a guarantee that your laptop will reproduce without problems HDvideo, have good performance in graphic editors ( Photoshop, Flash etc.) and feel good in modern games (depending on the model of the video card and graphics settings). At least, games of 2 years ago, in any case, will be within his power.

number - primarily affects the speed of simultaneously running applications and the speed of loading the OS.

Lack of RAM ( RAM) can lead to slow operation of the OS, "sluggish" execution of "orders" and brakes in games due to constant access to the swap file. As you know, a lot of RAM does not happen, but still, if it will not be enough for you in the future, its quantity can be expanded by simply adding memory modules, if the laptop chipset allows it.

RAM - Almost the only component except the hard drive that can be replaced in a laptop. Sometimes you can change the video card, but on a similar in terms of characteristics. The laptop processor is rarely replaceable, as it is often soldered directly to the laptop motherboard. Although in recent years there has been a tendency to place processors in mobile sockets and this is very good.

About hard disk space and the presence or absence of things like Cd rom, I think everything is clear and at your personal discretion. The more disk space the better. In terms of speed, mobile hard drives differ by a maximum of 10%.

A huge plus, if in a laptop, it is used as a system disk and in addition to it is a hard disk. Or the only one SSD high volume drive. The use of solid-state drives significantly increases the speed of loading and operating the OS. Reduced response time, installation of programs and unpacking archives.

Communication opportunities.

Almost every laptop has a module. Exist several standards this wireless connection. The more supported standards, the greater the chance that your laptop will catch almost anywhere in the coverage area. Typically, the standards switch themselves, depending on the type of access point equipment.

Existing standards: 802.11a/b/g/i/n. Usually enough b and g standards but availability 802.11nadopted in 2009 g - welcome.

It's also nice to have on board ( 4G) or 3 G module.

Networks at these frequencies - have very large coverage areas, but in any case you need to have a subscription to them (no free cheese). If in your city and your region where you would like to use a laptop - there are no networks Wi —Max or 3G, then you should not buy a laptop with their support (extra charge about 3-5 tr). And do not despair if these modules are not provided in the laptop. There are a lot of inexpensive external ones on the market 3G/4G modems connected via.

When carrying the laptop over distances of more than 100m, use laptop bags with security framework. They really save laptops in some cases.

That's all. We hope you choose a laptop that will satisfy all your needs.

Hard disk, hard drive, HDD - which are one and the same. A very important component of the computer. Very often, it is this part that fails.

The need to buy a hard drive can arise only for two reasons - either the old drive worked out its own, or you started updating your computer, including deciding to increase the hard drive.

So, by what parameters you need to choose a hard drive:

Dimensions
First of all, you need to know the parameters that are suitable for your PC - the width of the disk in inches, which is ideal in size for standard mounts on laptops and computers. The standard for desktop computers is 3/5 inches, for laptops it is 2/5 inches.

There are also much smaller hard drives: 0.85 inches, 1 inch, 1.3 inches, 1.8 inches.

Interface Connection Type

SATA- A new kind of interface, which replaced the old IDE. This type of interface gives higher throughput.

IDE- type of interface for connecting the hard drive to the system board, used mainly in older computers.

SATA interfaces come in several versions, the difference in which is the data exchange speed: SATA Revision3.0 (SATA 3, SATA 6Gb / s or SATA / 600), SATA-II (SATA 3Gb / s or SATA / 300), SATA (SATA 1.5 Gb / s or SATA / 150).

I want to draw your attention to the fact that motherboards supporting the SATA 3 hard drive interface began to be released in early 2010. Therefore, if your computer is released before this date, then a SATA 3 drive will not work for you. SATA 2 and SATA interfaces are compatible, the connectors of these hard drives are exactly the same.

Volume
Modern, new hard drives produce up to 10 terabytes. The most popular sizes of stored disk information for home computers are 500, 320 and 250 gigabytes.

When choosing the size of the Hard Disk, you need to consider that the actual capacity is slightly less than that indicated by the manufacturers. After all, it is known that 1GB is equal, 1024MB, but this number, for some reason, is rounded up to 1000MB, and this rounding is not in favor of the buyer.

Speed
The standard indicators for the hard drive speed are 7200 and 5400 rpm.

Computer professionals recommend not striving for high speed. Very often, high performance discs do not have high performance, but they heat up faster and stronger, consuming more electricity, as a result of which, due to overheating, they fail faster.

Cache Capacity (memory clipboard)
The clipboard is the RAM of the hard drive itself. The higher the volume indicators, the faster the data exchange rate. The sizes are 32, 16 and 8 megabytes.