What is Monitor in Computer? And Types of Monitor



Monitor shows us the work going on inside the computer. Whenever we do work, we constantly keep looking at that work whether it is being done correctly or not. Similarly, when we work on a computer, all our work is running on the CPU (Central Processing Unit). Now we cannot see inside the CPU, so we use Monitor.

A monitor is a part of a computer, which consists of Screen and Electronic Circuits, with the help of which we can see what work is happening on the computer. So what do you want to know about how Monitor works?

So let's start and gain some knowledge.

Table of content:
  • What is Monitor?
  •  Monitor full form
  •  Who invented the monitor?
  •  What does monitor work?
  •  Characteristics Monitor
  •  Advance conventional display technologies of latest display technology.
  •  Types of Monitor
  •  How to choose a good monitor?


What is Monitor?


What is Monitor

A monitor is the output device of a computer that displays all information in a pictorial form. The monitor is connected to the CPU (Central Processing Unit) through a cable. These days, such monitors have also come, in which the CPU is also attached.

Now you might be wondering what the monitor is doing, the main function of Friends Monitor is to show the processes running inside the CPU so that you can work on your computer. The monitor usually includes circuitry, display devices, power supplies, and casing.

If the monitor will not be connected with the CPU then you will not be able to see what work is going on in the CPU. The monitor shows the Softcopy of the work you have done.


In the old times, Computer monitors used Cathode Ray Tube (CRT). Due to which the monitor was very large and heavy. But today, monitors with very light and thin LCD screens are used. The monitor is also called Visual Display Unit (VDU) or Screen.

With this, we can also see videos and images kept in the memory of the computer. The computer has a video card which transmits the computer's Graphical Information to the Monitor.

If we talk about Monitor Definition, then it is a device that is used to continuously check or check the record of something on the computer. If you do not know which device is Monitor, then we tell you that Monitor Electronic Device is.

So you know that What is Monitor? Hai but have you ever thought that Who invented the Monitor?

Also read this post: Computer Par How to change Screen Resolution? - How to change the screen resolution of Windows 7 and Windows 10!

Monitor full form – “Mass On Is Train On Rat


Who invented the monitor?

The monitor was discovered in 1897 by a German scientist “Karl Ferdinand Braun”. He introduced a CRT (Cathode Ray Tube) monitor with a fluorescent screen known as a cathode ray oscilloscope.

In 1942, two people formed the first "Automatic Electronic Digital Computer" in America named 'Atanasoff-berry computer'.

What does monitor work?

 This computer monitor is a type of display adapter that displays information processed from a computer's video card when a video card or graphics card converts to binary. Information can be displayed in images from 1s and 0s, then images easily and directly in a connected monitor.

Therefore, the computer monitor has main function. Displaying video and graphical information that is generated from the computer's graphics adapter allows or users to interact with the computer. It is categorized according to an output device.

 A monitor is a very important part of the entire computer system. This is sometimes called the Video Display Unit (VDU).

Characteristics Monitor

The quality of the monitor's performance is evaluated using some key factors:

Aspect Ratio:

It is a relation of the horizontal length of the monitor to the vertical length (Example- 16: 9 or 4: 5).
Proportional relation between width and height. Historically, computer displays, like most televisions, have an aspect ratio of 4: 3. This means that the ratio of the width of the monitor display screen to the height is 4 to 3. The aspect ratio for widescreen LCD monitors is 16: 9 (or sometimes 16:10 or 15: 9).

 Size:

Interestingly, the method of measuring screen size is different for CRT and LCD monitors. For CRT monitors, the screen size is measured diagonally from the outer edges of the display casing. In other words, the outer cover is included in the measurement as seen below.

For LCD monitors, the screen size is measured diagonally from inside the edge. Cases are not included in this measurement, as shown in the image below.

Due to the different ways of measuring CRT and LCD monitors, the 17-inch LCD display is comparable to the 19-inch CRT display. For a more accurate representation of the size of the CRT, locate its viewable screen size. This is a measurement without external out of the CRT display.

The popular screen sizes for monitors are 15, 17, 19, and 21 inches. Notebook screen sizes are small, typically 12 to 17 inches.

Display Resolution:

Also known as Dots Per Inch (DPI), it determines the number of pixels in inches per line.

The resolution of the monitor indicates how much density the pixels are packed into. The pixel is smaller for a picture element. A pixel is a dot in a graphic image. Graphics monitors display pictures by dividing the display screen into millions of pixels into rows and columns.

Each pixel on a color monitor is actually made up of three dots namely red, green, and blue. The quality of a display monitor depends largely on its resolution.

Resolution refers to the number of individual points of the color, known as the pixels contained on the display. Resolution is expressed by identifying the number of pixels on the horizontal axis (row) and the number on the vertical axis (column), such as 800 × 600. Resolution is affected by many factors including screen size.

Monitor sizes have increased over the years, changing the display standard and resolution.

Viewing Angle:

When these angles are large, it is easy to see from the tilt or corner of the screen. When you look at an LCD monitor from an angle, the image may dim or disappear. Colors may also be misrepresented. To compensate for this problem, LCD monitor manufacturers have designed wider viewing angles.

Manufacturers give a measure of viewing angle in degrees (a larger number of degrees is preferable). Generally, between 120 and 170 degrees. Since manufacturers have different viewing angles, the best way to evaluate this is to test the performance itself.

Brightness or Luminance:

It is a measure of the amount of light produced by an LCD monitor. It is given in nits or one candle per square meter (cd / m2). 1 nit is equal to one cd / m2. for general-purpose tasks, typical monitor brightness rating ranges are 250 to 350 cd / m2. For movies to be displayed, brighter luminance ratings such as 500 cd / m2 must be.

Dot Pitch:

This is the distance between each pixel in each square inch that is displayed. The shorter the distance, the sharper, and clearer the images are.

Contrast Ratio:

Difference between True Black and True White on screen. The higher it is, the better.

Refresh Rate:

Display monitors should be refreshed several times per second. The refresh rate determines how many red drones the screen has to go per second. The monitor's refresh rate is measured in Hertz. A monitor with a fast refresh rate flickers less.

Contrast Ratio:

The monitor's contrast ratio rates the degree of difference of the monitor's ability to produce bright white and black colors. (Example, 500:1) like this, the figure is usually expressed as a ratio.
Generally, contrast ratios range from 450: 1 to 600: 1, and they can be rated as high as 1000: 1. Fibers greater than 600: 1: however, provide little improvement in lower ratios.


Advance conventional display technologies of latest display technology.

 There are many disadvantages of conventional display technologies, that can be accomplished by using the latest display technologies of living. Let us know about some such Advantages.

Their fabrication process is very easy and display devices are very thin. Compared to the conventional display devices.

LCD devices can, in a comparison, view OLED displays from different angels because they are "emissive" devices meaning that the board emits light rather than modulating them as transmitted or reflected light.
 She does not use a backlight.

Their driving voltage and total power consumption are very low. Compared to other display technology.

The material used is eco-friendly and does not use lead or some such harmful materials.

Types of Monitor

There are also changes in Computer Monitor over time. We have given you some information about types of Monitor and Monitor information below:

CRT Monitor

What is CRT monitor
CRT Monitor

CRT full form is Cathode Ray Tube. 
CRT monitors are larger and much heavier in size than LCD monitors. Due to this, they require more space and due to being heavy, they also have much trouble moving and carrying them from one place to another.

CRT began to be used in Computer Monitor in the late 1970s. Back then, computers were not used in people's homes. At that time these monitors were only of Black & White Display. Then in 1977, Apple launched its Color Display Monitors Apple-ii. Color Display was the standard feature of Apple-ii.

LCD Monitor

What is LCD Monitor?
LCD Monitor

LCD full form is Liquid Crystal Display. Liquid crystals are used to make LCDs. LCD monitors are thinner and much lighter in size than CRT monitors. Due to this, they do not require much space and due to being light in weight, they do not have much trouble in getting and moving them from one place to another.

A lot of technology has been used to manufacture LCDs. In the 1990s, LCD displays were used as a laptop display, as LCDs were lighter in weight, thinner in size and smaller in size, which used less power, but LCD monitors were more expensive than CRT monitors., So at that time they were not used as Desktop Monitor.

TFT Monitor

What is TFT Monitor?
TFT Monitor

TFT full form is Thin Film Transistor.
It is a form of LCD which is the main technology used for Computer Monitors today. It is a Flat Panel Display just like LCD. Which are lighter in weight and thinner in size.

This is a better quality display than the LCD Display. Due to TFT Display, Contrast Ratio has improved, due to which we get to see images and videos of good quality. TFT here means 'thin Film Transistor'.

Plasma Monitor

What is plasma monitor?
Plasma Monitor
Plasma Screen is made of glass. These are called Plasma Display because they use very small cells, which are filled with 'electrically charged Ionized Gas'. Such cells are called Plasma.

Plasma Display has some advantages compared to LCD Display:

• Superior (better) Contrast Ratio
• Good Viewing Angle
• Faster Response Time
• But due to cheap LCD and OLED (more expensive but high contrast display), Plasma Display was not liked by the people, and by the end of 2016 they were stopped making.

LED Monitor

What is LED Monitor?
LED Monitor

LED full form is Light Emitting Diodes.
It is also a Flat Panel Display like LCD. LED Display uses as Pixels to display an image or video. LED displays are more bright than other displays, due to which it can be read or seen easily in daylight.

LED monitors to work longer than LCD monitors, so LED display is being used more in today's time. Also, LEDs take very little power to run and do not give much effect to our eyes.

How to choose a good monitor?

To choose a better monitor, first, you have to see what is the reason for using your computer. That is what you use computer for. Below are some different types of monitors. Which you can choose according to your need.
Monitor for general use

If you use a computer for home or office work, then you can take a general use monitor. Now because you are using your computer to browse or run some basic computer program. So this type of operation does not require high graphics processing. All monitors of low price fall in this category.

Monitor for professionals
If you are in the field of graphic design or video editing, then you should look for a good monitor. Because if you use an inexpensive display then it can spoil your work. Therefore, you need a screen that can meet your needs.

Monitor for gamers

Two things are most important for a gamer. Which includes a graphics card and monitor. To play games with high graphics the refresh rate and response time of your monitor should be better. If your computer needs gamers, then you should choose your monitor accordingly.

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