Today, almost every family has a computer. But few people know what a monitor is, how it works and what is laid down in the principle of its operation?
A monitor is a special device used to display images. There are two types of monitors: monochrome and color. Monochrome, respectively, is designed to display an image using two colors. Today, there are two modes of operation of monitors: text and graphics.
Let's see what a monitor is for working in text mode. This is a screen that is conditionally divided into familiarity. As a rule, it is divided into 25 lines of 8 positions. Each familiarity is a certain field where certain characters are displayed. Total characters are 256. Among them are uppercase and lowercase letters, numbers and punctuation marks, special characters and pseudographic symbols. If you use a monitor that is capable of reproducing a full range of colors, then each familiarity can be highlighted with a special color for text and background.
Now consider what a monitor is for displaying graphs, unique images, and more. First of all, we note that using the graphic monitor you can display various labels in unique fonts and sizes. After all, this type displays images using dots, the more there are, the better and sharper the image. Each point is a pixel. It can have its own color, and the total number of these points vertically and horizontally is called the screen resolution of the monitor.
Before you make a purchase, you should understand what a monitor matrix is. It is carried out using different technologies, and its quality is determined by the size of the pixels (grains). The larger the pixels, the worse the display quality.
Do not miss the color scheme of the screen. The number of colors characterizes the level of quality. According to the individual technical features of each computer, there are several graphic display modes: EGA, VGA, SVGA, LCD.
In order for the monitor to set one of these modes, the graphics accelerator of the personal computer must be equipped with a sufficient amount of memory. Today, SVGA mode is not supported by all programs, and additional drivers are installed for its normal operation.
A monitor is a device that can be of various sizes. Allocate 14-inch, 17-inch, 19 and 21-inch. Inches is the length of the
diagonal of the screen.As already mentioned, another important detail when choosing a monitor is the grain size of the screen (pixel). Today, the optimal pixel size is 0.26 - 0.28 mm. If the monitor is selected with larger grains, then it is necessary to use special non-optical glasses, since such points badly affect the eyes.
Today practically no monitors are manufactured on the basis of a kinescope; flat monitors — liquid crystal or plasma — are increasingly being produced. These are the most popular technologies, they are more compact, such monitors can be hung on the wall. The most popular manufacturers are LG, ViewSonic, Samsung, Sony and Panasonic.
We examined what a monitor is and what are its main parameters. When buying, you should check the availability of components and related documentation.