Television Technology
    The definition on a television is a “medium for transmitting and receiving moving images, either monochromic or color, usually accompanied by sound” (personal). Televisions are used all around the world and are very popular in America. They are used for communication receivers and in many other ways, but mainly entertainment. In the United States alone, there are 220 million TVs (personal). Out of all of the countries around the world, Americans watch the most TV. We watch on average more than eight hours a day. Most other countries watch around three hours (International).
They have made great advances from back when the first TVs were made in the 1930’s (personal). They have changed in ways such as the outer box, size, screen, price, and usage.
    Television broadcasts mocked radio broad casts that were used in the 1920’s. These TVs had “high power frequency transmitters to broadcast the television signal to individual TV receivers (personal).” From 1948, when the commercial TVs were sold for $2,495, we have come a long way (How) In stores today there are TVs available starting at below one hundred dollar. More complex and better TVs can sell in that range of $2, 495. In 1954, TVs went from black and white, to color. Another change that was seen was the change in shape. It went for a “vacuum tub chassis,” to a “more solid state component” (personal). Devices were created to make viewing televisions more pleasurable than it was previously. In 1970, the VCR was created and this made viewing movies in the comfort of one’s own home more prevalent. Though 1970-1980, antennas and cable boxes were used more frequently. These gave more channels available. In the early 2000s, analog signal switched to digital signal. After that, High Definition Television became common as well (personal). .
    High Definition Television (HDTV) was first created in 1981. HDTV is different from digital TV in which it carries more pixels. HDTV carries instructions that have 2 million pixels. The picture in HDTV is better than regular TVs. What is also used in HDTV is LED and LCD technology. The LED lights are used to have high quality picture by adjusting the brightness and the contrast. These TVs are also very thin (personal).
    In the past 80 years, we have seen many changes. As the years go on, there will be more advances in television technology that we have to look forward to. We will see changes in the way TVs are used, quality, and other aspects.
 
Works Cited
How Much Has TV Changed Since 1926? A Lot. Sterling Salalive.29 Nov 2010.
http://www.personal.psu.edu/edb5020/tv.html
International Telecommunication Union, “Who Watches Most Television.” The Economist. 23 Sept 2009. Web. 12 Dec 2010.