Lcd Tv Presentation Speech 3h1zb

Good afternoon respected Sir and my fellow classmates. Today I(Ronak Shah) along with my group Romin Parekh and Tanvi Shah will present to you our report in the field of TV Technologies. The following display technologies will be discussed in our presentation:  Plasma  Liquid Crystal Display (LCD)  Light Emitting Diode (LED) The following topics will be discussed:  Evolution of TV  Plasma  LCD  LED  Experiment  Conclusion  Future TV applications History  The television is one of the biggest inventions over the past century, and there is a great history behind it.  No single person can take credit for the invention of the television. The history of television records the work of numerous engineers and inventors in several countries over many decades. The fundamental principles of television were initially explored using electromechanical methods to scan, transmit and reproduce an image. 

The modern television was the result of a number of discoveries in electricity, electromagnetism, and electrochemistry

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John Logie Baird was a Scottish engineer, who is best known as the inventor of the first working television system in 1920s.

Two paths were followed: 1. Mechanical television - based on rotating disks, and 2. Electronic television - based on the cathode ray tube

(Some of the important discoveries were found in 1817 with the discovery of selenium, an element that when exposed to light is a strong conductor of electricity. Then in 1878 Sir William Crookes invented the cathode ray tube. The first working television was made in 1884 by Paul Nipkow of . Nipkow made a mechanical scanning disk which picked up fragments of a picture through small holes and then redrew them onto the light-sensitive selenium tube. The picture was then portrayed on a receiver and as a result it was very crude, but it was a start. It was later suggested that the use of the cathode ray tube for the receiver would make the image clearer.)

Introduction  We have reached a metaphysical state where change is the only constant. 

Over the years, television has become an essential part of our lives. It plays the role of an entertainer, stress buster that relieves the viewer of unwanted tension. It also keeps the viewer updated on worldly issues.

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To completely live the experience that the television shows, it must be of extremely high standards so as to create a ‘virtual’ environment that dazzles and consumes the viewers into a globe of high definition audio/ video clarity.

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Television technology is constantly changing with LCD, Plasma, and LED Televisions being the latest advancements.

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the above technologies differ widely from each other.

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This is primarily why it is important to scrutinize this area of research to highlight the potential of future growth in this field of technology.

LCD TV History LCD technology has been used in items such as watches for many years. But the LCD TV helped push the Liquid Crystal Display to a new level of public awareness.

1. Time Frame o

The high-definition LCD display was introduced to the consumer home entertainment market in the early 21st century. The first LCD TVs were slotted between standard and highdefinition displays and were called "enhanced definition" TVs.

History o

The first LCD TV display was conceived by inventor and electrical engineer George Heilmeier in May 1968

Technology o

LCD TVs work by using a backlight to shine light onto millions of electrically controlled pixels. These pixels are directed to block or certain wavelengths of light and work in unison to produce the picture seen on the screen.

Fun Fact o

The first LCD TV was sold by electronics maker Sharp in 1981. But unlike the mammoth sizes available today, the first LCD TV available in stores was standard definition only and had a screen size of 14 inches.

Resolution o

As of 2009, LCD TVs offer two viewing resolutions: 720p or 1080p. 1080p is often referred to as "True HD" and offers superior image quality to 720p TVs.

Advances o

The LCD TV is quickly being replaced by the LED TV. LED TVs use light-emitting diodes instead of fluorescent backlighting to produce superior image quality. LED TVs can also be made thinner than LCD displays.

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Let us take a brief look at the Evolution of Television

http://www.high-techproductions.com/historyoftelevision.htm http://www.tvhistory.tv/1935-1941.htm http://www.nyu.edu/classes/stephens/History%20of%20Television%20page.htm http://inventors.about.com/od/tstartinventions/a/Television.htm http://en.citizendium.org/wiki/History_of_television http://www.fcc.gov/omd/history/tv/ http://www.google.com/Top/Science/Technology/Television/History/ http://tvhistory.tv/ http://www.mztv.com/mz.asp