Friday, January 30, 2009

TELEVISION

Television (TV) is a widely used telecommunication medium for transmitting and receiving moving images, either monochromatic ("black and white") or color, usually accompanied by sound. "Television" may also refer specifically to a television set, television programming or television transmission.

the television set has become a common communications receiver in homes, businesses and institutions, particularly as a source of entertainment and news. Since the 1970s the availability of
video cassettes, laserdiscs, DVDs and now Blu-ray discs, have resulted in the television set frequently being used for viewing recorded as well as broadcast material

A standard television set comprises multiple internal
electronic circuits, including those for tuning and decoding broadcast signals. A display device which lacks a tuner is properly called a monitor, rather than a television. Television genres include a broad range of programming types that entertain, inform, and educate viewers.

The most expensive entertainment genres to produce are usually drama and dramatic miniseries.
A television system may use different technical standards such as
digital television (DTV) and high-definition television (HDTV). Television systems are also used for surveillance, industrial process control, and guiding of weapons, in places where direct observation is difficult or dangerous

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