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We generally call the ratio of screen width and height as aspect ratio (also called aspect ratio or just screen ratio). From the late 19th century until the 1950s, almost all movies had a standard 1.33:1 aspect ratio (1.37:1 to be precise, but collectively referred to as 1.33:1 as a standard). In other words, the width of the movie screen is 1.33 times the height. This ratio is sometimes expressed as 4:3, which means that the width is 4 units and the height is 3 units. The TV programs we currently receive have this ratio. Due to this tradition, the screen ratio of LCD monitors is still mainly 4:3.
However, real movies nowadays are generally in widescreen, and converting widescreen movies to 4:3 will always result in a loss of picture quality, shape or content. Nowadays, the functions of computers are no longer just for writing documents and surfing the Internet. When watching movies more and more often, and when more and more various digital products adopt the 16:9 ratio for performance, in order to better perform on the computer For watching movies and TV shows, widescreen LCD monitors appeared. And since future high-definition TVs will mainly use the 16:9 ratio, more and more LCD monitors currently adopt the widescreen ratio. The ratio of widescreen is closer to the golden ratio, and it is more suitable for human eyes, giving people a more comfortable feeling when watching movies. In addition, for office applications or industry applications, widescreen products can display two complete Web pages or tile more windows on one screen, which can effectively improve office efficiency. In work such as digital image processing and multimedia editing, widescreen has more advantages. The wider viewing angle is suitable for business people to display commercial design plans, and is a better choice for office work. Even more and more current games are beginning to support widescreen display. In the final analysis, widescreen is more suitable for the visual characteristics of human eyes.