A monitor is an essential component of any computing system. It is a device through which a computer informs a person of the result of his work. If the user enters the initial data using the mouse and keyboard, then through the image on the monitor screen the computer reports the result of its calculations.
Such a kind of dialogue. Unlike small internal components, this device can
not be overlooked, so everyone has a general idea of it. With this article we will supplement the knowledge base by examining in more detail the types of monitors.
Depending on the type of screen used, all such display devices can be divided into two large groups - modern liquid crystal (LCD, TFT, LCD) and practically withdrawn from mass production, electron beam (CRT, CRT). Sometimes the list is supplemented by a third variety - plasma panels, but these are quite specific solutions that can not be called massive. Thus, when studying the types of monitors, they are limited to LCD and CRT.
Surely, many still remember what the TVs looked like before the beginning of the "liquid crystal era." These were quite massive devices, the screen of which was far from perfectly flat.
Although in recent years the situation has changed markedly in this regard. Those who had the opportunity to look inside the CRT housing of a TV set know that almost all of its volume was occupied by a
cathode ray tube, and the size of the control board rarely exceeded the area of the album sheet. The connection between the monitor and the TV is direct: they use the same principle of operation. Of course, within the same production technology.
Considering the types of monitors, you can not ignore the features of a particular solution. Thus, we list the advantages of CRT monitors:
- almost perfect transmission of the entire color gamut, even the most budgetary model in this regard is significantly ahead of the expensive LCD monitor;
- lack of viewing angles - the picture on the screen is always visible, regardless of how exactly the line of sight falls on it;
- Dead pixels, the scourge of all liquid crystal technology, cannot be in CRT models;
- There are no problems with blurring the image while displaying dynamic scenes.
But the liquid crystal types of monitors boast completely different characteristics:
- low power consumption from the network, the usual value is 40 watts (compare with 80 or more with a CRT);
- compact dimensions and low weight, which means that in order to place such a device on the wall, there is no need to mount a bulky suspension structure;
- a significantly lower load on vision: the minimum flicker frequency of the backlight system is estimated at hundreds of megahertz (despite the stereotype that has formed, due to the presence of PWM regulation, it still exists);
- perfect image clarity and the absence of problems with mixing the rays at one point, as well as the impossibility of distorting the geometry.
Liquid crystal monitors have a number of characteristics that are not available in CRTs. This is due to too much difference in technology. So, the following types of monitor arrays are distinguished: the most common TN, promising IPS, various modifications of VA. Each of them has only its inherent features, which are important to consider when buying an LCD monitor.