Difference between LCD and LED

LCD stands for "liquid crystal display". LED stand for "Light Emitting Diodes” also work on the base of liquid crystal displays.  While both LCD and LED  TVs base on liquid crystals system, it’s the backlighting that really makes them different from one another. All the LED TVs are basically LCD but all the LCD TVs are not LED,s simple just as all the eagles are birds but all the birds are not eagles.

Liquid crystal display explained

Liquid crystals to help create an image in both the LCD and LED TVs, The difference in these both are the backlights.  While a standard LCD uses fluorescent backlights, an LED uses light-emitting diodes for backlights.  LED monitors usually have superior picture quality, but they come in varying backlight configurations.  And some backlight configurations create better images than others which is generally known as different resolutions.

LCD vs LED a brief history

Plasma display were most common display before liquid crystal display until 2014. Than this system replaced by liquid crystal system in LCD TVs and LED TVs.

Liquid crystal 

There are three state of matters liquid solid and gases , out of these there are some strange blend of different states .

A liquid crystal is a substance that has properties of both a solid and a liquid.  When you get to the upper tiers of science, you begin to discover that everything you once knew is wrong.

The arrangements of molecules in liquid crystal is Typically, bunch up dense and unstructured.  But when the liquid crystal is exposed to electricity, the molecules suddenly expand and arrange themselves into a very structured, interconnected shape.

Pixel

Pixels are the basic building blocks of a digital image.  A pixel is a small dot that can emit colored light.  Your display is composed of thousands of pixels, and they're in a variety of different colors to give computer interface and the webpage that you're currently reading and video or image which your seaing like on LCD and LED TVs screens.

Every pixel is composed of three basic color filters, which are called "subpixels."  There's RGB-colured known as red, blue, and green subpixel for every pixel.

How display work in LED and LCD TVs

Every pixel is composed of two glass sheets, and the outermost sheet has the subpixels. The liquid crystals are sandwiched between the two sheets.

Backlight behind the screen produced white light liquid crystal is in there liquid arrangement known as randomly arrange light can't pass through it but while pixel is used when electricity applied they arrange themselves in orderly arrangement straighten out to allow light pass through it.

Main difference is type of backlighting 

Standard LCD monitors employ “cold cathode fluorescent lamps,” also known as CCFLs as backlights. These fluorescent lights are evenly placed behind the screen so that they deliver consistent lighting across the display. All regions of the picture will have similar brightness levels. Commonly Known as backlighting full-array.

LED TVs used  light-emitting diodes,”instead of fluorescent lamp. which are extremely small lights. There are two methods of LED backlighting: full-array backlighting and edge lighting.

With full-array backlighting, the LEDs are placed evenly across the entire screen, similar to an LCD setup. But what’s different is that the LEDs are arranged in zones. Each zone of LED lights can be dimmed (also known as local dimming).

Local dimming is a very important feature that can dramatically improve picture quality. The best images are ones that have a high contrast ratio; in other words, images that have both very bright pixels and very dark pixels simultaneously.

When there’s an area of the picture that needs to be darker (a night sky, for instance), the LEDs in that region of the picture can be dimmed to create a truer black.

There are no local dimming capabilities in LCD,s and edge-lighted displays in LED,s.

So evenly distributed backlighting with local dimming, enhance the picture qualities in LED,s.

These are the basic difference of LCD and LED.

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An overview of all vitamins from vitamin "A" to vitamin "K"

The importance of food depends on its ingredients.  Vitamins are the most important of nutrients.  The word vitamin is derived from the Latin words "vital" (meaning essential) and "amines" (meaning life).

The first regularly discovered vitamin B-1 (Thiamine, Vitamin B1) was discovered in 1910, while the last discovered vitamin B-9 (Vitamin B9, Folic Acid) was discovered in 1941.  Many diseases such as beriberi, scurvy, pellagra, and rickets are caused by a lack of certain vitamins in the diet.

Importance of vitamins and their sources 

How important vitamins are for our physical health and which vitamin can be obtained from which food.  Its brief description is as follows.

Vitamin A (Vitamin A, Retinol)

The function of this vitamin is to keep the eyes, skin, hair, teeth and gums healthy.  It is found in milk, butter, eggs, green leafy vegetables and liver.

Vitamin B1

It is also called "thiamine".  It produces energy in the body by releasing carbon dioxide from glucose.  It is found in grains, milk, poultry, fish, liver, yeast, flour, legumes and lean meats.

Vitamin B2

It is also called "riboflavin".  It supplies the body with energy from carbohydrates, proteins and fats.  It is found in abundance in milk, grains, liver, lean meats, eggs and leafy vegetables.

Vitamin B6

It also has a name "pyridoxine". It plays an important role in the formation of some other proteins.  Makes lipids and red blood cells.  It is best found in whole grains, leafy vegetables and lean meats.

Vitamin B12 (Cyanocobalamin)

It is essential for the formation of nucleic acids.  Red blood cells are also formed due to its presence.  It maintains the nervous system.  It is found in liver, kidney, fish, milk and animal foods.

Folic Acid (B9)

It is also called "Folate".  It is also essential for nucleic acids and some other proteins.  It plays an important role in the formation of red blood cells.  It is found in liver and leafy vegetables.

Vitamin B5

Pantothenic acid (Vitamin B5, It is a molecule that is needed by the body by changing carbohydrates, fats and proteins. It is also necessary for the nervous system and the birth of certain hormones.  , found in leafy vegetables, liver, kidney and nuts.

Vitamin B3: Niacin

It is essential for reactions in cells that produce energy.  It is found in eggs, meat, liver and grains.

Vitamin B7

It is essential for obtaining energy and fatty acids from glucose.  Performs many chemical functions of the body.  Found in liver, kidney, eggs and leafy vegetables.

Vitamin C (Ascorbic acid)

It keeps bones, teeth and blood vessels healthy.  It plays an important role in the formation of collagen.  Collagen is a protein that supports body structures such as skin and bone.  It is abundant in leafy vegetables and fruits, especially fruits with a bitter taste.

Vitamin D (Calciferol)

It is very important for strong teeth and bones.  It is also very important for the absorption of phosphorus and calcium in the body.  Found in abundance in egg yolks, cod liver oil, milk and salmon.

Vitamin E (Vitamin E, Tocopherol)

It helps in the formation and protection of red cells and muscles.  It is found in cereals and vegetable oils and ghee.

Vitamin K (Phytonadione)

This is essential for blood clotting (otherwise it becomes difficult to stop bleeding from a wound).  It is found in abundance in leafy vegetables.

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