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PC MONITOR | Types, resolution, parts and how they work?

HePC monitor It is an output device that visually shows the processing or results of the operation of the computer so that its understanding is facilitated.

You can read more aboutPARTS OF A COMPUTER | What they are and what they are for?

Why PC monitors?

He computer monitor or computer screen (in Spain), is an output device that presents the results of computer processing visually so that they are understandable to the user. In that sense, the monitor is necessary and fundamental for a computer system, because without their participation the user will not understand well what is happening and will have to use other means to interpret what happens with the computer.

That is why it is stated that the PC monitor shows the person what they need to know to interact with the computer. For your selection or understanding of operation you have to look at relevant issues such as resolution, quality or pixels.

Types of PC monitors

Touch monitors They are those that can be recognized because their operation and each of the operations that can be performed with them is through a touch or touch system. This is a type of monitor that will only work by finger contact on the screen.

VGA monitors Its acronym has Video Graphics Array meaning and is an invention of the year 1988 thanks to the company IBM that was responsible for the development of a monitor that had a VGA type connection and thus be able to present a stronger resolution. Currently the resolutions are much higher.

SVGA monitors Its acronym is Super Video Graphics Array. They were designed during 1989 with a resolution that reached 800 by 600 pixels and could present up to 16 different types of colors. It was a breaking point that marked the evolution in pixel quality.

LCD monitors or liquid crystal monitors Regarding LCD are the acronyms used in English to say Liquid Cristal Display. They are a type of monitor that is characterized because its screen is relatively thin and is made of liquid crystal, in addition to expanding the light through its colored pixels. In this case the light is reflected by means of a small glass device, which will receive the light in an inconsistent way; It is through monochrome pixels, which are going to form through the light. They are monitors that are semiconductor devices.

LED monitors The name assigned to them descends from the English Light Emitting Diode, which means that it makes use of a light emitting diode. It is composed of polychromic or monochromic modules, which will allow images to be visualized.

Active LED Monitors It is a type of monitor that has a transistor for each pxel. For its operation it is necessary to conduct diodes in catholic tubes, so that light rays are reflected and the image is emitted. The image is of excellent quality and although it is flat screen, it has a kind of box in the back area.

Passive LED Monitors They are monitors that are flat both ahead and behind.

OLED monitors It is an organic light emitting diode by its acronym. It is a type of monitor that works through a layer of electroluminescence, which is composed of organic elements that will allow the work done with the light inside the monitor. It is in this way that the image is emitted when reflected through the screen.

DLP monitors Its image can be emitted thanks to a optical semiconductor, which digitally modulates the light it reflects and thus synchronizes its emission by means of mirrors, which are microscopic or micro mirrors. It is considered today as the monitor with the most defined image of the market.

See more about:TYPES OF MONITORS

Common resolutions of PC monitors

The maximum resolution It is a term that refers to the maximum number of pixels that can be displayed in each dimension and is represented in rows by columns. It also relates to the size of the screen and its proportion.

  • 1024 x 768 eXtended Graphics Array or XGA.
  • 1280 x 800 Widescreen eXtended Graphics Array or WXGA.
  • 1280 x 1024 Super eXtended Graphics Array or SXGA.
  • 1440 x 900 Widescreen Super eXtended Graphics Array or WSXGA.
  • 1680 x 1050 Widescreen Super eXtended Graphics Array Plus or WSXGA.

Parts of a monitor

  • Control panel Zone where brightness, screen position and other settings are set.
  • Liquid crystal flat screen It is the area where images are displayed. Of course you can change the type according to the kind of monitor you have.
  • Power button It is the one that allows the equipment to be turned off or on digitally. The illumination LED will indicate the status of the device.
  • Power connector The cable that carries the electrical energy.
  • Power supply Area where energy is taken to the monitor.
  • Plastic covers They are the covers that are used to protect the internal circuits and protect them from external effects.
  • Support It is what allows the screen to move from one position to another.
  • Connector and data cable Through them the video signals that are transmitted from the computer are sent.
  • Principal card Card that concentrates each of the parts of the monitor.
  • Graphics or video cards It is an artifact that allows you to create and control the images that are projected on the monitor. It converts the analog signal that enters.
  • screen It is the area where the images are shown.
  • node It is responsible for sending the electrical energy to the screen by means of the cables.
  • Flexin coil Through it the electron beam can move at the right point of the screen.
  • Convergence ring Where the controlled electrons are kept so that the phosphor layer of the screen is impacted and give a certain color.
  • Horizontal exit Part where the horizontal coil feeds on the deflection yoke.
  • Deflection Yoke– It is responsible for transporting the electron beam.
  • Cathode ray tube Tube that is based on a glass ampoule to the vacuum to protect the phosphor screen and an electronic can.
  • Electronic can A part that aims to create a very fine electron beam that impacts the screen by crossing all the electrodes it has.
  • SYSCON It is a commissioned circuit that maintains the proper functioning of the monitor.
  • FLYBACK A part that creates high voltage on the monitor.
  • Demagnetizing kitchen It is a part that since it is turned on the equipment demagnetizes it.
  • Ctodo It is responsible for creating the electron beam.
  • Focus grid It is responsible for keeping electrons in their displacement, as they have to collide with the screen or the final node.
  • Screen grid. This is where electrons attract each other by having greater power than the ctode.

Related Article: KEYBOARD (Computing) | Types, distribution, parts and operation

How PC monitors work

In the case of liquid crystal display monitors, they are composed of two specially treated plates, which are made of polarized glass and pressed together. Among them there is a liquid crystal material that will respond to an electric current so that different wavelengths of light can pass between these different points on the surface.

Instead of creating points of light, the central objective of an LCD monitor is to block most of the light, so that only certain wavelengths are allowed to pass, which are then interpreted as colors for the brain human, and as they pass to the front of the monitor.

It is then a backlight that emits a continuous flow of light that will cover the entire rear area of ​​the monitor at each visible wavelength. The electrical current that is created by the visual signal that is sent from the computer will make that liquid crystal material responsible for blocking the wavelengths of light that are different by means of its face, so that finally general shapes are created and Colors of an image.

Behind the face of the monitor, although in front of the liquid crystal a closed matrix is ​​located with transistors connected to the pixels facing the screen. This is too thin a matrix that even looks transparent. Anyway, as soon as a variable current such as the one described above runs through it, the actual current of the manipulation of the liquid crystal will cause certain pixels to illuminate, so that general color will be added so that it passes through the light in the background .

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