See Also: television(dictionary)
television(medicine)
television(dictionary)
television (TV)(encyclopedia)
satellite television(dictionary)
Antena 3 de Television, S.A.(finance)
cable television(dictionary)
digital television(dictionary)
public television(dictionary)
BBC Worldwide Television(dictionary)

card index (oh) and television (TV) (sh)


card index (oh)



n [C] BrE
a box of cards that contain information about something and are arranged in order, especially the cards with book information on them in a library
American Equivalent: card catalog

television (TV) (sh)




Electronic system for transmitting still or moving images and sound to receivers that project a view of the images on a picture tube or screen and recreate the sound.

Early versions (1900-20) of the cathode-ray (picture) tube, methods of amplifying an electronic signal, and theoretical formulation of the electronic-scanning principle later became the basis of modern TV. RCA demonstrated the first all-electronic TV in 1932. Colour TV (in the 1950s), cable TV systems (introduced in the 1960s), and recording or playback machines (in the 1980s; see VCR) followed. Digital high-definition (HDTV) systems (1990s) provide sharper, clearer pictures and sound with little interference or Other imperfections and have the potential to merge TV functions with those of Computers.