Telly
,
televeesion
or
TV
, is a
telecommunication
medium uised for transmittin muivin eemages in
monochrome
(
black an white
), or in colour, an in twa or
three dimensions
an soond. The term can refer tae a telly itsel, a
telly programme
("TV shaw"), or the medium o transmission for telly. The telly is a
mass medium
for divert,
eddication
,
news
, politics, clavers an advertisin.
Telly becam appen tae uise in crude experimental furms in the late 1920s, but it wad still be several year afore the new technology wis mercatit tae consumers. Efter
Warld War II
, an impruived furm o black-an-white TV braidcastin becam faur ben in the Unitit States an Breetain, an telly sets becam cowmon in hames, businesses, an institutions. In the 1950s, telly wis the main medium for influencin
public opeenion
.
[1]
In the mid-1960s, colour braidcastin wus introduced in the US an maist ither developit kintras. The availability o multiple teeps o storage media lik
Betamax
,
VHS
tape,
local disks
, DVDs,
flash drives
, heich-defineetion
Blu-ray Discs
, an
deegital video recorders
haes enabled viewers tae watch prerecordit material ? lik films ? at hame on thair ain time schedule. For mony raisons, telly an video programmin storage occurs on
the clood
thir days. At the end o the first decade o the 2000s,
deegital televeesion
transmissions gey an waxt in popularity. Anither development wis the muive frae staunart-defineetion telly (SDTV) (
576i
, wi 576
interlaced
lines o resolution an
480i
) tae
heich-defineetion televeesion
(HDTV), that provides a
resolution
that is substantially heicher. HDTV mey be transmittit in various formats:
1080p
,
1080i
an
720p
. Syne 2010, wi the invention o
smairt television
,
Internet televeesion
haes increased telly programme an film appenin via the Internet throu
streamin video
services lik
Netflix
,
Amazon Video
,
iPlayer
,
Hulu
,
Roku
an
Chromecast
.
In 2013, 79% o the warld's
hoosehauds
awned a telly set.
[2]
The replacement o early bouky, heich-voltage
cathode ray tube (CRT)
screen displays wi saddit, smeddum-eydent, flat-panel alternative technologies lik
plasma displays
,
LCDs
(baith
fluorescent-backlit
an
LED
), an
OLED
displays wis a haurdweirs revolution that begoud wi computer monitors in the late 1990s. Maist televeesions selt in the 2000s war flat-panel, mainly LEDs. Major manufacturers annoonced the discontinuation o CRT, DLP, plasma, an even fluorescent-backlit LCDs bi the mid-2010s.
[3]
[4]
[5]
In the near futur, LEDs is expectit tae be gradually replaced bi OLEDs.
[6]
On the tap o that, major manufacturers haes annoonced that thay will increasinly produce smairt TVs in the mid-2010s.
[7]
[8]
[9]
Smairt tellies
wi integrate Internet an
Web 2.0
functions becam the dominant telly furm bi the late 2010s.
[10]
Telly seegnals wis ineetially distreebute anly as terrestrial telly uisin heich-pouered
radio-frequency
transmitters tae
braidcast
the seegnal tae individual telly receivers. Alternatively, telly seegnals is distreebute bi
coaxial cable or optical fiber
,
satellite
seestems an, syne the 2000s via the
Internet
. Till the early 2000s, thir war transmittit as
analog
seegnals, but a
transeetion
tae deegital telly is expectit tae be complete warldwide bi the late 2010s. A staundart telly set is componed o multiple internal
electronic circuits
, includin a tuner for
receivin
an decodin braidcast seegnals. A veesual
display device
that lacks a
tuner
is correctly cried a
video monitor
raither nor a telly.
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Television
.
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