Television is a medium Portal.adp.com  invented by the scientists of Europe and is a harmonious blend of several expert systems scientist in dunia.Perkembanganya in line with advances in electronic technology, which is moving rapidly since the invention of the transistor by William Sockley and comrades in 1946.Transistor an object of sand that serves as a conductor of electricity is free hambatan.Transistor able to replace the function of the tube (vacuum tube) which was created by Lee De Forest in 1912.
In 1923 Vladimir Zworykin Katajev successfully create elektris.Sementara television system in 1929 a scientist named John L Baini conduct an experiment first television in the world and continued in Laboratory Bell.Penemuan Telephone Company continued to grow until finally Paul Nipkow childbirth Television mekanik.Hal This is evidenced when the New York World's Fair 1939 television display measures 8 x 10 inches.
Television then undergo gradual changes in technology, namely
1. Television is the first generation of black-putih.Di here reflected ray after passing through the projection lens system will form a black-putih.Dalam subsequent developments, the reflected beam after passed lens system, distributed also a prism / dichroic forming three basic colors, namely red (red), green (green), and blue (blue) .Tiga projection images that contain these three basic colors RGB further each projection image signal is converted into red, green and blue, which also produces color images projected on the screen.
2. The second generation television is television berwarna.Ada in three color television system, namely:
1. Phase Alternating Line (PAL): 625 lines / sec - 60 hertz,
2. National Television System Committess (NTSC): 525 lines / sec -50 hertz,
3. Sequential Colour A'memoar (SECAM): 825 lines / sec -50 hertz.
To be able to change the system can use the Conversion unit (converter). This generation television has a screen ratio of 4: 3.
3. The third-generation television is High Definition TV (HDTV). This third-generation television that guarantees perfection tontonan.HDTV (Hi-Vision) can be regarded as a tv time depan.HDTV have the size ratio of 16: 9 screen.