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With the advancement of science and technology, although the pace of the huge CRT monitor has slowed down, the emergence of LCD monitors has also confirmed the trend of the times. The development of the monitor has undergone a major qualitative leap in every process. From black and white to color, the monotonous world of surveillance images has moved into a colorful, colorful, and vivid image world; from blinking to no flickering, it has brought health to monitoring staff; then from CRT to LCD brings environmental protection, I believe This is the ultimate goal of the monitor. Here we analyze the difference between the two: gradually out of the market, followed by LCD products, while in the use of cathode ray tubes (CRT) color monitor and the use of liquid crystal display (LCD color monitor in the image The principle is distinguished by the fact that the former uses the magnetic deflection drive to implement line-field scanning (also called analog driving), while the latter uses dot-matrix driving (also called digital driving), so the former often use TV lines. Define its sharpness, and the latter defines its resolution by the number of pixels.The clarity of a CRT monitor is mainly determined by the channel bandwidth of the monitor and the dot pitch and convergence error of the picture tube, while the latter is determined by the pixels of the LCD screen used. The number is decided. 
The advantages and disadvantages of CRT and LCD:
The CRT monitor has the advantages of low cost, high brightness, wide viewing angle, and long service life, while the LCD monitor has the advantages of small size (flat plate shape), light weight, no flashing, and no radiation of the image, but the LCD monitor The main disadvantages are high manufacturing cost, narrow viewing angle (darkened image when viewed from the side, reversed color when viewed from the side), and short service life (usually the brightness of the LCD screen is reduced to less than 60% of the normal brightness after 5000 hours of burning, but The average life span of CRT is up to 30,000 hours or more. It should be affirmed that price, perspective, and service life are the three bottlenecks that affect the popularity of LCD monitors. Of course, LCD is one of the most mature leading-edge products of flat panel display devices and has been increasingly concerned by manufacturers at home and abroad, and its technology is continuously improving. At present, the horizontal viewing angle of a new thin film product (TFT) process using an in-plane switching technology can reach 160°, and the vertical viewing angle can reach 140°; at the same time, the price of LCD screens will gradually spread with the products. And the gradual increase in production and gradually decline; LCD's life will also be with LCD backlight and liquid crystal material technology continues to improve. Therefore, there is no doubt that after several years (perhaps 5 or 10 years later), LCD monitors are likely to replace CRT monitors as the mainstream of the monitor market. )
As the technology matures, LCDs are gradually replacing the original CRT monitors with their unique advantages such as high brightness, high contrast, elegant appearance design, and environmental protection features. Compared with the CRT monitor, the LCD monitor has features such as power saving, low radiation, and space saving, which makes it impossible to match the low-cost CRT monitor. The market is rapidly shrinking, leaving only markets such as Central and South America and China. No matter what kind of screen content, LCD monitor can bring accurate and exciting screen effects, making it the best choice for video surveillance.
The screen of the LCD monitor is different from the screen of the LCD monitor. The screen used for the LCD monitor is much higher than the screen of the LCD monitor, so a good LCD monitor is better than the LCD monitor. The price is higher.
The working time of the LCD monitor and the LCD monitor are different. The LCD monitor can operate 24 hours a day, 365 days, while the LCD monitor can only work continuously for several hours to ten hours. It cannot be used as an LCD monitor.
Why does it not feel good to have a CRT monitor at close range?
The user selects the LCD mainly for good-looking, and some people still do not feel good CRT at close range. This is determined by two factors: 1. Brightness and gray scale are not adjusted well. 2. The video effect transmitted by itself is not good enough. LCD monitors are high-definition, which has a matching problem. The front-end video source cannot be 1:1 with the back-end display device. Therefore, the quality of the images displayed on the back-end display device also gives the impression that there is no CRT. Therefore, in the engineering application, it is necessary to select the camera and lens that match the LCD monitor, and other devices on the transmission path of the video signal reach the requirements of the bandwidth >6M, otherwise it will affect the image grading effect. 
Ultra Plantâ„¢ Grow Light is combined our advanced All-In-One technology with patented optical design and customized light full spectrum supported from our experienced LED engineers, plant specialists and other partners working on horticulture.
Ultra Plantâ„¢ is the most versatile horticultural grow lighting fixture for indoor plants with flexible full spectrum, brightness control and uniform, wider light distribution, suitable for top lighting of all types of crops. No matter it applies to anywhere for any crop, Ultra Plantâ„¢ can do perfect work for you.