Types of Display Screen & Output Devices | 1st Year Computer Science in Urdu | Chapter 1 Lecture 15

Описание: Types of Display Screen | Output Devices | 1st Year Computer Science in Urdu/Hindi | Chapter 1 L-15
In today’s digital world we are very familiar with different types of monitors. We spend most of our time sitting in front of many types of monitors, such as playing games, watching movies, and many other things.
There are many parameters to measure the performance of a monitor such as resolution, luminance, contrast ratio, response time, refresh rate, and power consumption. Also, the common problems that often arise in monitors are dead pixels, blurred screen, phosphor-burn, etc. Let’s get to know.
1. LCD monitor:
LCD is known for ‘Liquid Crystal Display’ made of liquid crystals. It is the most used monitor worldwide, as it requires less space, consumes less electricity, and produces relatively less heat than an old CRT monitor.

LCD monitors are thinner and much lighter in size and weight than CRT monitors. Due to this, it competes with LED and OLED in the market.
This display was first used in laptops, and later the manufacturers also being produces for Desktop Computers range from 17 inches to 60 inches. Being these monitor need less space and light in weight, they do not create any trouble in transporting and moving them from one place to another.

Both LCD and LED monitors have considerably more adaptability for positioning the screen the manner in which you need it. These monitors can turn, tilt up and down, and even rotate from landscape to portrait mode.

2. LED Monitor:
LED’s full form is ‘Light Emitting Diode’ is the latest innovation in the market today’s market competing with LCDs and Plasma Monitors. These types of monitors are slightly curved or flat panel displays that use light-emitting diodes for backlighting on the screen instead of cold cathode fluorescent (CCFL) for back-lighting.

LED displays are more bright with 4k resolution than other displays, due to which it can be read or seen easily in daylight time. LED monitors use less power than LCDs as well as LEDs are widely used by gamers for playing high graphics and HD games.

The advantage of LEDs is that they produce images with higher contrast and vivid colors as well as doesn’t make a negative impact on the environment at the time of disposing of. In addition the LEDs are more durable as compared to LCD and CRT Monitors.

3. OLED Monitor:
OLED stands for “Organic Light Emitting Diode“. As the name suggests, it is made of organic material (such as carbon, plastic, wood, and polymers), that used to convert electric current into light.

This is also the latest display technology used in displays of television, computer screen, game consoles, PDAs, or even in the latest smartphones. It can be thinner or lighter with a higher contrast ratio than LCDs.

4. Plasma Monitor:
The Plasma monitor panel (PDP) is made of Plasma technology is another latest types of computer monitor technology. Display of plasma made with cells. These cells are filled with ‘electrically charged Ionized Gas‘. Such cells are called Plasma.

The basic idea behind its invention is that it illuminates the tiny colored fluorescent lights that create image pixels. Each pixel is made of three fluorescent lights like a tiny neon light- red, green, and blue lights. that produces a superior contrast ratio, along with the intensity of these lights also vary accordingly.

5. CRT Monitor:
Here CRT means “Cathode Ray Tube”. Its main part is the cathode Ray tube which is called the “Generally Picture tube”. The above image is of the CRT monitor and was used in a few decades ago as a desktop computer or to watching TV.

CRT monitors are much heavier in size as compared to LCD and LED monitors. Due to being heavy, they have much trouble while moving and transporting from one place to another. Also, they need more space for installation.

As they now disappeared from the market quickly in the last few decades, because display manufacturers switched their production lines from CRT 4:3 displays to LCD 16:9 widescreen displays in order to survive the transition to the digital world widescreen television of LEDs or LCDs.
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