Types of monitors: Concept and characteristics
Monitors are called peripheral output devices in the computing world. They contain a screen that is part of the interface that allows the user to observe through images, all the operations and activities that are carried out on a computer. The types of monitors represent today a way of appreciating the environment and processes that man needs in today’s world.
Monitors have different characteristics and powers; in this article you will be able to know everything related to them. Today they are part of the life and social environment of many people. The types of monitors maintain eye contact with the user and are the link that interrelates ideas and thoughts with the computer.
There are various models of monitors that little by little have evolved in such a way; where a monitor nowadays can be used as a television, as a screen for a pc, also as an alternative device in advertisements. The versatility in which the creation of the types of monitors has been developed is very extensive.
History and evolution
At the beginning of the 20th century, television technology began to emerge on the world market. In the beginning it did not cause the impact that many expected. This type of technology was highly criticized and specialists did not really believe that it could go that far and did not give it many possibilities for development.
For the year 1923 the first black and white television appeared that little by little began to position itself in the public. During the two decades that followed, the impact it had on the world market was impressive, increasing production and development throughout the world.
In the 1940s, the color TV monitor appeared, which made it possible to expand technology and advance the world of communication. From then on the television revolution began to change the world and will determine the advances in information.
Towards the 60s, television was consolidated, along with it the monitor or screen was also born, which was the life of the television. The emission of images from a distance allowed to create a way of seeing life very different from how it had been seen until now. Little by little it evolved until it reached our days.
With the birth of computing, monitors took the reference of television technology, to show on screen the processes that were done in computers. Then the first devices called UDV or Visual Presentation Unit appear.
In 1964, the plasma screen was invented at the University of Illinois in the USA; It is based on a process where a small cell of phosphorus and special gases such as ions and neutral particles come into contact with a cathode. The contact generates a gas of three colors caused by the phosphor that allows them to be manipulated to create the different colors.
However, this technology did not see the light until the year 2000 when certain televisions appeared in some places. showing diversity in the resolution of images and definition of the projection.
These types of monitors had a built-in screen and keyboard, which was connected to the nascent computer equipment in the 1980s. They were two-color screens that showed only green text and black screen background.
The Apple Company, which was beginning to show the first computer equipment, launched the CRT television monitor called Apple II on the market especially in the early 1980s. It was used to participate in various video games.
The IBM company launched the first CRT for computer equipment in 1981. It was made up of three-piece equipment: the CRT monitor, the keyboard types and the CPU. Although a bit rudimentary, these teams were separated by cables, since the CPU was huge and could not be linked to the devices.
With the arrival of desktop PCs also launched by IBM, graphics adapters or CGA (Color Graphics Adapter) appear. These types of monitors allow four colors to be displayed, they had a resolution of 320 x 200. In 1984 the same company developed a monitor that allowed the emission of up to 16 colors, with a resolution of 640 x 350 pixels.
The IBM company continued to develop and evolve the world of computing and computing. So in 1987 it launched the monitor called VGA (Video Graphics Adapter).
This screen was adapted to a new PS / 2 model computer. This monitor allowed 256 colors and a screen resolution of 640 and 480 pixels. The monitor served as a reference for the development of the computer industry, today they are part of the Components of a computer.
90s and current times
Starting this decade, the XGA and UXGA monitors appear, which revolutionized the display market. They had the power to emit more than 16 million colors and the resolution reached up to 800 x 600 megapixels. These types of monitors had very high definition that later evolved to the following display devices in various ways.
By the year 2000 the technology was advanced and it began to create liquid screen monitors such as LDCs, which initially had a resolution of 1600 x1200 megapixels and the capacity to process more than 17 million colors. The human eye only has the capacity to process 10 million colors.
At present, the movement and development of monitors continues its process of evolution. They have even built flexible, transparent monitors that are not only used by computing; but they are structured to be used in different professional areas such as science, sports, astronomy among others.
How do they work and what are they for?
Monitors work today according to the characteristics and needs of the user. Most operate through an interconnection system of microcircuits that are activated through various processes. They are addressed and activated with buttons located on the sides or in any other place of the same.
They can also be operated through remote controls if they are used as televisions. In the case of monitors for computers, the screens allow to offer variety and management through commands found in the operating system. However, they also have interactive menus that can be operated by touching the screen.
These so-called touch monitors are the most used today, and the technology is even used in most smart mobile devices. The types of monitors are being used in various areas of social life. In medicine, in culture, cinema technology, in the aeronautical world and in every area of support or human development they are a fundamental tool.
However, the use and operation is subject to the operational needs of a company, organization or person. So in computing they are part of a very important tool set. Together with the types of operating systems they allow us to perform actions such as:
- Watch movies
- Read books
- Observe graphics
- Prepare documents and observe the work step by step
- Check emails
- Connect to the internet and all social networks
- Develop works of architecture, design and art through various programs that include drawing, graphics, design.
- Look at photos
Today, various types of computer monitors are known , which are the ones that are used daily worldwide. Some more developed than others, are part of the conglomerate of the types of monitors that are in use. Their conformation is very different from one another.
Technologically they are differentiated by electronic processes that use various techniques such as liquid light, micro pixels, monochrome parts. These types of monitors have given an important evolution in the world of technology and computing, let’s see the models.
They have had enormous growth in the last 10 years. Touch technology allows mobile devices, tablets, computers, and various screens to operate by tapping on them. The basic operation is based on tapping the place on the screen to perform an action. They were developed in the late 90s and their boom came in the mid-2000s.
They are one of the most innovative in recent years. They allowed to replace many actions that were performed on a physical keyboard. The touch screen allows the user to enter the information into the system and in turn receives the result by that means by simply touching the screen.
It had its beginnings at the beginning of the year 2000 when they were used through a small pencil that activated the action by pressing the screen. Touchscreens are placed inside LCD monitors. They are part of the technological development of recent years and are observed in almost all activities of society.
From banks to large industry and sports companies, they use these devices. The monitors can be of several types: Resistive, capacitive and infrared; the difference between them is the definition of the resolution, quality and resistance of the image. According to these characteristics, its price can be varied.
They are the monitors that evolved from the 90’s and can be classified into two groups: The VGA type monitors, developed by IBM in the 80’s. They helped to present clearer visual resolutions. A few years later, SVGA monitors arrived, their acronym in English is Super Video Graphics Array.
These monitors were born in the late 90s and made a difference in resolution matters. Its arrival on the market allowed us to appreciate well-defined images, where the resolution reached 800 x 600 megapixels.
English calls Liquid Crystal Display. They are monitors that have the peculiarity of working through a liquid crystal system. The advantage of these types of monitors is that they are very light and light. Their conformation is very thin and they help to expand the images in a clearer way with their technology.
The system works by reflecting light through a small glass. This receives the light in a messy way and organizes it into very small dots that come out in the form of monochrome pixels.
They then allow to form a small beam of light that is transmitted to the outside. Each pixel is controlled by a microprocessor that controls the colors. The images on LCD screens are high definition and generate resolutions of 1080 pixels.
Nowadays they are the most necessary for computer equipment, they allow to consume little energy and take up very little space. The world market is invaded by these types of pc monitors . Video consoles, calculators, cell phones, digital cameras maintain their structure through these types of screens.
LCD images are of the monochrome type that adapt to any device without the need to contain a device or spatial picture tube, as is the case with CRT monitors. The bulbs of an LCD monitor last approximately 30 thousand hours to 50 thousand hours.
The variety in the model is determined by the type of technology and operationality of the user’s needs, let’s see what those types of LCD monitors are:
- Guest Hosts, GH for its acronym, are displays containing light-absorbing liquid crystal. This allows them to work with various colors. Its process depends on the type and level of electric field applied.
- Twisted Nematic, TN, are the ones you get on the cheapest LCD models. The liquid molecules work at 90 degree angles; In other words, the resolution process may vary when the images presented are very fast.
- Super Twisted Nematic, SNT is an evolution of the previous model and allows working with images that can change the state quickly. The movements of the molecules are improved and it is not determined at certain angles. This process helps that the image can be appreciated by the user, it is sharp and with an excellent resolution.
LED Types of monitors
This type of monitor called in English Light Emitting Diode, works through a diode that emits a very intense light. Its general conformation is made up of various polychromatic and monochromatic modules that, together as a group, allow the emission of high definition images that can be seen at long distances.
LED screens are widely used today for various types of shows where massive shows are required. They have the ability to have thousands of mini LED bulbs that help create images that can only be seen from a safe distance.
These models are made with small transistors in each of the pixels. They work through diodes and cathode tubes. These reflect the rays of light that later transform it into the image. In these types of monitors the images are of high quality, their physical structure is made up of a kind of box at the back.
Passive LEDs Types of monitors
They are flat screens that, on the front and back, use a technology similar to that of passive LEDs but with the difference in the formation of images with less definition.
They are the monitors that process millions of colors and allow to give a resolution image for large spaces. These components help to be part of the monitors that are used in stadiums and large events.
These display devices are small monitors that display a single color image or beam of light. More than a monitor, it is a state-of-the-art technology that helps shape LED screens, and they serve as a complement to form a static image in the form of a group.
CRT Types of monitors
They were created in order to transmit images over long distances through Hertzian waves. With them the television was born and allowed to start all the development of monitors in the world. It works through the cathode tube system. Although technology has evolved, these types of monitors are still manufactured for other purposes.
Also these types of monitors began the process of development of television, in the beginning the broadcasts on the screen were in black and white. On the other hand, it allows the reception of images that come from the computer. Your connection is made through a video port.
The form of emission is through a program source which can be an antenna or a computer. For color CRT monitors, their emission is carried out by combining the primary colors (yellow, blue and red). The amount of components that are inside the monitor, make it very heavy.
The screen sizes could not be made larger due to these limitations. The bigger the heavier. In the beginning, it was difficult to connect them to the computer systems and equipment of the 90s. It was not until the end of 2000 that the connection could be made.
OLED Types of monitors
It consists of a monitor that contains an organic type diode. Where light is emitted through an electroluminescence layer. They are made up of various organic compounds that allow internal light to be emitted inside the monitor, which subsequently emits the image to the outside of the screen.
Unknown-8 Types of monitors
Monitors of these characteristics were used for development and adaptation in computers. The system worked by sending the information that came from the computer equipment creating graphics through a trigger that sent electrons against a phosphorus parent.
It received them by emitting a small colored light. This procedure allows to reproduce diverse varieties of colors and at the same time to adjust different types of resolution. Its screen was curved and its weight was considerable. They had a disadvantage, when the electric fields were executed the screen vibrated and the resolution had to be adjusted. Some even exploded.
TFT, flat screen Types of monitors
TFT monitor types are a kind of variant of LCD liquid screen. It uses a very thin film transistor as generation technology, hence its name in English, Thin Film Transistor, so it improves the image considerably.
Unlike traditional liquid screens, the TFT screen. It exposes a series of pixels that are stressed or stressed to the maximum level in order to maximize their luminescence. This pressure is carried out for a period of one second. On large screens this technology cannot be applied.
So TFT monitor types are used for small equipment and instruments. The connections to generate the image are considerable; which is another limiting element for large screens.
The problem arises when all the pixels in the same column receive an increased voltage pressure in a fraction of a second. However, this is controlled through a small switch-type device that regulates each pixel separately.
Plasma screen Types of monitors
They are called FPDs, and they revolutionized the market when they appeared in sizes larger than 30 inches. Its name is due to the fact that the system uses small cell technology composed of electrically charged ionized gases. Its predecessors were fluorescent lamps. The characteristic of this type of screen is that it does not emit several pulsations while it emits the image.
The change in these pulsations comes when a signal is sent from the source, which could be a computer or the change of channel on the television. Which represents less fatigue while looking at the screen. They are the direct rivals of the LCD and CRT types of monitors.
Produces brighter images and very high resolutions. They are perfect for modifying the various image options such as brightness and contrast. They are also very light and take up little space. Its conformation allows to give them a lot of durability.
The contrast in the image makes the difference between the brightest and the darkest part. Generally, when the contrast is higher it is also more realistic. Unlike the other screens that when the brightness is increased the image tends to be excessive and loses resolution.