With the double eleven, Black Friday, the end of the double twelve, the price concessions of the major e-commerce companies are basically over, then we want to match the computer, how do we choose the CPU? Today, Xiaobian takes you to see the CPU purchase after the e-commerce discount is over. The old driver drove, and the passengers should grab the handrails.
â—Lianpeng Laojiao can still eat I7 4790K
What, the new Skylake is out, you actually recommend the old I7, you are not anxious, and listen to me slowly.
Since the double eleventh, Skylake's overall price has risen, especially the flagship I7 6700K, all the way soar, Taobao Intel flagship store has risen to 2999! ! So if you don't want to experience D4, not for more PCIE bandwidth, more motherboard expansion, is it worth it? Moreover, the performance difference between I7 4790K and I7 6700K is not big. The difference between playing games is not so obvious. Of course, the cost-effective one is preferred.
Even the official flagship store can't stop the price of I7 6700K soaring.
The price difference is nearly 700, but the performance is almost the same. At this time, the I7 4790K is the most cost-effective.
â— Skylake's backbone I5 6600K
Why should I recommend this U? First of all, he is a new generation of I5, with performance guarantee, and with K can be overclocked, the frequency has been 3.5G, the small super to 4.0GHz immediately. For those who want to experience the Skylake architecture and D4 memory, and the wallet is not drum, it is a very good choice, the sex can be used, and the price is not expensive.
The old rules and the boxed package are about less than 200 oceans. The advantage of boxed than the piece is the multi-year warranty. The guest officer also decides to decide.
How does TFT work?
TFT is the abbreviation of "Thin Film Transistor", generally refers to thin film liquid crystal displays, but actually refers to thin film transistors (matrix)-can "actively" control each independent pixel on the screen, which is The origin of the so-called active matrix TFT (active matrix TFT). So how exactly is the image produced? The basic principle is very simple: the Display Screen is composed of many pixels that can emit light of any color, and the purpose can be achieved by controlling each pixel to display the corresponding color. In TFT LCD, backlight technology is generally used. In order to accurately control the color and brightness of each pixel, it is necessary to install a shutter-like switch after each pixel. When the "blinds" are opened, light can pass through, and " When the shutters are closed, light cannot pass through. Of course, technically, it is not as simple as the one just mentioned. LCD (Liquid Crystal Display) utilizes the characteristics of liquid crystals (liquid when heated, and crystallized into solid when cooled). Generally, liquid crystals have three forms:
Smectic liquid crystal similar to clay
Nematic liquid crystal resembling a fine matchstick
Cholestic liquid crystal
The liquid crystal display uses filaments, and when the external environment changes, its molecular structure will also change, and thus have different physical properties-it can achieve the purpose of letting light through or blocking light-which is just like the blinds just now.
Everyone knows the three primary colors, so each pixel on the display screen needs three similar basic components described above to control the three colors of red, green, and blue respectively.
The most commonly used one is twisted nematic TFT LCD (Twisted Nematic TFT LCD). Existing technologies vary greatly, and we will cover them in detail in the second part of this article.
There are grooves on the upper and lower layers. The grooves on the upper layer are arranged longitudinally and the grooves on the lower layer are arranged horizontally. When no voltage is applied to the liquid crystal in its natural state, the light emitted from the light emitting layer of the twisted nematic TFT Display working principle diagram of Figure 2a will be twisted by 90 degrees after passing through the interlayer, so that it can pass through the lower layer smoothly.
When a voltage is applied between the two layers, an electric field is generated. At this time, the liquid crystals are aligned vertically, so the light will not be twisted-the result is that the light cannot pass through the lower layer.
(2) TFT pixel structure: The color filter is divided into red, green, and blue according to the color, which are arranged on the glass substrate to form a group (dot pitch) corresponding to a pixel. Each monochromatic filter is called It is a sub-pixel. In other words, if a TFT display supports a maximum resolution of 1280×1024, then at least 1280×3×1024 sub-pixels and transistors are required. For a 15-inch TFT display (1024×768), then a pixel is about 0.0188 inches (equivalent to 0.30mm), for an 18.1-inch TFT display (1280×1024), it is 0.011 inches (equivalent to 0.28mm) .
As we all know, pixels are decisive for the display. The smaller each pixel is, the larger the maximum resolution that the display can achieve. However, due to the limitation of the physical characteristics of the transistor, the size of each pixel of the TFT at this stage is basically 0.0117 inches (0.297mm), so for a 15-inch display, the maximum resolution is only 1280×1024.
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ESEN Optoelectronics Technology Co., Ltd, , https://www.esenlcd.com