There are different sizes of LCD screens on the market today. When choosing a screen size, do you know how to calculate it and which size best suits your needs? The "inches" used are "inches" (inches), not the usual inches; 1 inch = 2.54 cm. Therefore, LCD screen sizes are generally measured in diagonal length. For example, on a 17-inch screen, the diagonal is 17 inches, which is approximately 43.2 cm. On the other hand, dividing the screen's measured diagonal distance by 2.54 gives you the usual number of inches. The larger the LCD screen, the wider the field of view within the range that the human eye can handle. The 22" x 24" widescreen product is theoretically the better size at this point (if you have a wide desk). However, in living rooms and bedrooms, the size of LCD projectors is unlimited in these places, since the computer has built-in functions such as playing TV and DVDs. Units such as LCD TVs are moving towards larger sizes.