As the landlord mentioned before, there are many aliases for screen resolution, but even if it is ever-changing, it can be summarized into two categories: one is physical resolution, and the other is logical resolution. To be precise, we should have studied the physical resolution before, not the screen resolution/display resolution.
Review the content of physical resolution: LCD screen is a dot matrix screen covered with many LCDs of the same size. We also call these liquid crystals pixels, and different pixels display different colors, which constitutes what we see. We use the form of "number of pixels in horizontal direction x number of pixels in vertical direction" to express the physical resolution.
The physical resolution of the screen is determined at the time of manufacture. There are 2560 x 1080 liquid crystals on the monitor of the landlord, and this fact will not change with the use time. So we can say that the screen resolution cannot be changed, which involves the problems of equipment and materials.
Some people say that the screen resolution can be changed. If you don't believe me, you can look at the change options given by the operating system. This statement is also good, but you have to understand that the screen resolution at this time refers to the logical resolution, not the physical resolution.
The higher the physical resolution, the larger the acceptable (logical) resolution range and the larger the adaptive range of the display screen. It can be seen that the landlord's screen can be changed to many resolutions by the system. If it's an ordinary notebook, I'm afraid there won't be so many choices.
Back to our question, is the screen resolution fixed? You can say yes, because the physical resolution of the screen is determined by hardware, and once it is formed, it cannot be changed; You can also say no, because the logical resolution of the screen can be changed by software to some extent.
Suppose the resolution of the screen currently used by the landlord is 1600 x 1200, that is to say, the screen has 1600 pixels in the horizontal direction and 1200 pixels in the vertical direction, and the screen shape is square. If I want to change the screen (logical) resolution to 800 x 600, then there are two ways to achieve it.
First, the central display, only the 800 x 600 pixels in the middle of the screen will remain lit to display the image, and the surrounding parts will remain unlit (the LCD screen is not unlit, it looks like it is unlit), and the whole picture will be reduced in the center. However, because this method often makes the picture smaller, the system generally does not display it like this. To achieve this effect, we need the help of a third party.
Second, the analog display system will try to use every pixel on the screen. After changing the resolution to 800 x 600, the image will still be displayed in full screen, but it should be understood that there are 800 (logical) pixels in the horizontal direction and 600 (logical) pixels in the vertical direction of the whole screen, and each logical pixel occupies 4 physical pixels.
It is worth mentioning that although the system supports changing the logical resolution by default, it can only be changed to be lower than the physical resolution, and it must be changed to a higher level with the help of a third party, such as the VSR function of AMD graphics card, the DSR function of NVDIA graphics card, or directly changing the system configuration file. But no matter how to change it, it is also achieved through simulation. After all, physical resolution cannot be changed. Because the effect of analog display is always rough, the resolution recommended by the system is generally the value of physical resolution. Don't imagine making the screen clearer by such means.
Even a stranger who knows nothing can give the correct answer to this question: obviously, the higher the better, the best is what suits you. In order to avoid being laughed at by local tyrants, we discuss the problem of high resolution on the premise that all screens have only one yuan.
A high-resolution screen is usually called a high-resolution screen. I can't tell you how high the resolution is, because this standard is constantly improving with the development of science and technology. 1920 x 1080 used to have high resolution. Now, a screen with a resolution of 2K, 4K or higher is a high-resolution screen.
The mainstream 2K resolution refers to 2560 x 1440, and the mainstream 4K resolution refers to 4096 x 2 160, where k is thousands. Both are named after the number of pixels in the horizontal direction, and so on, and there is 8K resolution. You don't need to remember these values, and the landlord can't remember them occasionally.
The higher the resolution, the higher the requirements for graphics cards. The same game, the same computer, is very smooth at the resolution of 1920 x 1080, but if the resolution is changed to 4K, it will greatly increase the burden on the graphics card and cause various jams. Don't think that three or four thousand yuan of graphics cards can ignore these problems. Several popular stand-alone games on the market will have different degrees of jamming at 4K resolution, so the higher the screen resolution, the better.
The last question mentioned the high-resolution screen, which may be found by careful students. We discussed the influence of resolution on the computer burden without considering the size of the screen. Now add the parameter of size, and discuss the problem of high pixel per inch of the screen, that is, the problem of high screen resolution, regardless of the price.
We know that the unit of pixels per inch is PPI (pixels per inch). For convenience, we always use PPI to refer to pixels per inch. But when it comes to screen resolution, DPI (Dots per inch) is better, because we use dot to represent light spots, which is more accurate than Pixel to represent physical pixels. .
In order not to confuse pixels per inch with printing resolution, the landlord has always used PPI to refer to pixels per inch of the screen, but in fact, the landlord recommends that you use DPI to refer to it; Of course, every inch of picture pixels is best represented by PPI. All right, let's not gossip. We only discuss the problem of high DPI (pixels per inch of screen).
Theoretically, a high-resolution screen does not necessarily have a high DPI, because DPI is determined by both screen size and screen resolution. But in reality, high-resolution screens often have high DPI, because there are only a few commonly used screen sizes. When the size is fixed, the higher the resolution, the higher the DPI will naturally be. So many people often use high-resolution screen to refer to high-DPI screen, which is strictly wrong, but it is the mainstream view.
Besides high hardware requirements, what are the disadvantages of high-resolution screen? There must be. Otherwise, why didn't this screen with exquisite display, stable technology, public expectation and manufacturers making money quickly become popular? Note that the high-resolution screen generation mentioned by the landlord here refers to the screen with high DPI. The following only makes some simple explanations for Windows system.
The interface of traditional Windows software, such as QQ and Office, is often designed in pixels. Let's take the calculator program that comes with Win7 system as an example. On the 23-inch screen of 1920 x 1080, it is only the size of a cigarette box, while on the 4K screen of the same size, it is only the size of a stamp. How to use it so small? Subtitles may be hard to imagine, here is a video for everyone.
We use a new screen with four times the size of pixels per inch, hoping to get four times the display details instead of the software interface of 1/4. The software can't get enough display area on the screen with high DPI, which hinders its use. This is a problem faced by Windows system. This also answers our question: the pixel height per inch of the screen is not necessarily good, and sometimes it will bring trouble.
In fact, Microsoft has been proposing solutions to this problem. From several major updates of Win 10, we can see the efforts made by Microsoft. After Win 10 creative version, the problem of high-resolution screen is no longer a big problem.
I have to say that the historical burden of Windows is really too heavy. Microsoft has set industry standards, but it also limits the development of an industry. Of course, this does not prevent the landlord from being a soft powder. Even if Lumia mobile phone is really difficult to use, the landlord still believes that Microsoft is extremely hard.
After reading the last two questions, most people will probably give a positive answer to this question. Nowadays, mobile phone screens are generally between 4 inches and 6 inches. High resolution means high DPI, which means more delicate display effect. Android doesn't have the problem of window system on high-resolution screen. But is it really that simple? I do not think this is necessarily the case.
Assuming that the screen of the mobile phone is between 4 and 6 inches and the resolution is 1920 x 1080, then the value of DPI can be calculated by formula, which is not the limit of human eye resolution. How strong is the ultimate resolution of the human eye? So far, there is no definite numerical value to express it, but it has reference value.
Apple once gave a saying: At a viewing distance of 30cm, it is difficult for human eyes to feel the improvement of definition beyond 300 DPI, and 300-400 dpi is the limit of human eyes' resolution. Based on this, Jobs called the screen above 300 DPI the retina display. For example, the DPI of iPhone4 reached 326.
Now the DPI of Android phones often exceeds the value of 326, but the display effect seems to be not as good as that of iPhone4. The landlord thinks that the pixel arrangement adopted by Apple is the essence of retina screen, not all the parameters of DPI. Since the landlord is not particularly cold to Apple, we will not continue to digress, or return to the issue of high-resolution screen of Android phone.
The DPI of the 2K screen of mobile phone is around 500, far exceeding the so-called retina resolution. High DPI will naturally improve the display effect of mobile phones, and the landlord has no conscience and can't say that the high-resolution screen of mobile phones is meaningless. It just shows that under the normal viewing distance, this improvement is not obvious and the marginal benefit is too low. Of course, this is the subjective view of the landlord. If you can see freckles thousands of miles away, forget it.
The advantages of high DPI screen are not obvious, but there are also many disadvantages. First of all, the high-resolution screen will take up more CPU and memory resources, which will cause the phone to get stuck; Secondly, the 2K screen consumes power like running water, which seriously affects the endurance experience. The landlord's words may be exaggerated, but these situations do exist.
Spend more money, enjoy not more value, but more pain. Is it worth it? Everyone has a steelyard in his heart. Some people think that the improvement of screen fineness is more important than anything else. I really can't refute it.
It's not that the landlord doesn't support the 2K screen of mobile phone, but he just told you some advantages and disadvantages. Now it is 20 17. It can be predicted that the high-resolution screen of mobile phone will be the future trend, and these existing shortcomings will be eliminated in the product reform. What is more talkative is that the popularity of 2K screens is not entirely due to the improvement of experience, but the choice of the market. To put it bluntly, it is irrational consumption behavior.
The landlord believes that real technology should make you feel the existence of technology, and mobile phones should fight for experience. Only entry-level users can't jump out of the pit of hardware parameters, so don't drag those parameters you know when experience is king.
Based on this, the landlord often recommends some Oppo and Vivo mobile phones, but is often accused of not knowing how to install X on the mobile phone. Although it is true, it is unpleasant. Of course, don't be misled by me, thinking that OV's mobile phone is just a question of suitability. There is another sentence, OV is indeed high with low price. I use Xiaomi, but I am optimistic about the development of OV, because it knows more about human nature and the market. One day, OV will also launch cost-effective products, but not yet.
College students like to talk about the configuration of some electronic products, but they are often full of mistakes. Probably because the introduction is easy to master, so I really want to remind you that the ultimate appeal of paying attention to parameters is practical experience. Of course, you can ignore my words and spend money. What you buy is happiness. Every penny you spend is a vote for the world you want.
Maybe it's because I talked too much knowledge, or the tomato noodles at noon are not to my taste, so I talked so much about this problem. Please don't blame me. I don't like to talk about configuration with others. On the one hand, I don't know much knowledge. Secondly, everyone has different views. I hope everyone will seek common ground while reserving differences and eliminate wrangling.
In this section, we have learned something about screen resolution. Taking advantage of this theme, the landlord recommended some screen-related products that can enhance happiness. For the record, everything recommended by the landlord is something I have experienced for a long time. It is because they are really good that I recommend them to everyone, not because I charged advertising fees.
At present, the ratio of most displays is 16: 9. It can be said that the aspect ratio of the screen is 16: 9, and the physical pixel ratio in the horizontal and vertical directions of the screen is 16: 9. Because the physical pixel size is the same on the same screen, the two statements express the same meaning.
The popular screen ratio is 4: 3, 16: 9, 16: 10, and now the screen ratio of 2 1: 9 has set off a new upsurge. Although many people disdain 2 1: 9 and even call it a screen with fish, this does not prevent the landlord from becoming a loyal fan of 2 1: 9.
The biggest feature of hairtail screen is its length. The advantage of being long is that you can put down a lot of things, most of which are useless. Let's go directly to the picture. In addition, watching movies with a fish screen is super cool.
A commonly used display is an LCD screen with its own backlight. The disadvantage is that it is harmful to the eyes, and it will be uncomfortable for a long time. Is there a screen that doesn't hurt your eyes like paper? Naturally, electronic ink screen is indispensable, and the most representative product is Kindle, an electronic paper book reader.
Kindle can prevent myopia, maintain hand fatigue and cure anxiety caused by forgetting myself and electrocution. If you love reading, don't miss this artifact. As the saying goes, SLR is poor for three generations, and Kindle is rich for a lifetime. If books are the ladder of human progress, then Kindle is the elevator of human progress.
I was going to send a KPW3 to VD, and then push the letter through the mailbox every three to five times. Later, I learned that VD received a Kindle from home. So for a few days, I suddenly felt addicted to books ... I'm not kidding.
Off-screen display, to put it bluntly, means not lighting up the whole screen, but directly displaying time, notification messages and other contents in some areas of the screen, which saves electricity and is convenient for viewing time and notification.
The principle of off-screen display is that only some pixels on the screen are lit for display, and other pixels are always off and do not emit light. Therefore, the power consumption of the off-screen display function can be controlled at a very low level.
Well, the landlord can only think of these screen things related to resolution for the time being. If you don't understand anything, please leave a message for enquiry. I'm starving. I pray that the shop downstairs is not closed.
Simply relying on the concept of PS 1.0- resolution content, I am afraid that many students will still feel that in the fog, the landlord has made some supplementary explanations around the concept of resolution, so that students at all levels can understand and gain something.
It should be noted that the supplementary part may have irreversible effects such as misleading or damaging brain holes. Please decide whether to read it carefully. I hope you can read the relevant parts of the resolution in order without fear.