LCD or LED?

Hello guys!
Today i want explain some info about LCD and LED.
I guess you all know about LCD and LED , yes its about the display of electronic devices.
Ok what is LCD?

LCD(Liquid Crystal Display) is a a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Its usually using on Television, calculator and computer display. LCD was dominating on notebook display because of a low-used energy and high resolution. Each pixel on LCD is contained by molecule layer on two transparent electrode.
So what is LED?
LED(Light-emitting Diode) is a  semiconductor light source. LED's are used as indicator lamps in many devices and are increasingly used for other lighting. Of course on Television history, LED is a transform of LCD TV, where the fact about LCD vs LED :

LED fact :
-High Quality Graphic.
-Used a bit energy compared LCD.
-Free of Mercury and very thin display.
-Price of LED more expensive about 30$ - 40$ from LCD.
-The weight is a bit lower from LCD.

LCD fact :
-Good Quality Graphic, but sometimes its like an burned display.
-Price between 150$ - 200$ each year to operated LCD.
-Mercury used on manufactory process.
-Price is lower from LED.

Virtual Reality Versus Augmented Reality

Hello guys!
From the title above, its sure that we will get a little information about Virtual Reality and Augmented Reality!
Ok then, What is Virtual Reality?

Virtual Reality is a term where making a computer simulating a physical image like an reality. The more reality, more good that virtual reality.
So, for what is the purpose of Virtual Reality?
Virtual Reality occasionally used on Military Simulated, or Pilot Simulated. Where they begin studying how to ride an airplane or military jet. After that, they can try it in the reality soon.
Virtual reality can serve to new product design, helping as an ancillary tool for engineering in manufacturing processes, new product prototypes, and simulation. Among other examples, Electronic Design Automation, CAD, Finite Element Analysis, and Computer Aided Manufacturing are widely utilized programs.

The use of Stereolithography and 3D printing shows how computer graphic modeling can be applied to create physical parts of real objects used in naval, aerospace, and automotive industries,which can be seen, for example, in the VR laboratory of VW in Mladá Boleslav. Beyond modeling assembly parts, 3D computer graphics techniques are currently used in the research and development of medical devices fortherapies,treatments, patient monitoring,and early diagnoses of complex diseases.
Now about Augmented Reality,

Augmented Reality is a term where making the real world simulating a physical image using a device such as computer-generated sensory.
So, for what is the purpose of Augmented Reality?

Augmented Reality occasionally used on mobile applications where its using for GPS, sensors and many more. Modern mobile augmented reality systems use one or more of the following tracking technologies: digital cameras and/or other optical sensors, accelerometers, GPS, gyroscopes, solid state compasses, RFID and wireless sensors.