電視廣播系統的終端設備。簡稱電視機。電視機將天線接收到(dao)的(de)(de)高頻電視信號(hao)(hao)還原(yuan)為視頻圖像(xiang)信號(hao)(hao)和(he)低頻伴音(yin)信號(hao)(hao)，分別加給顯示(shi)器件和(he)揚聲器，重現(xian)圖像(xiang)和(he)重放聲音(yin)。電視機的(de)(de)分類方(fang)法很多。依(yi)顯示(shi)圖(tu)像的(de)顏色，分為(wei)(wei)黑(hei)白電(dian)視機和(he)彩色電(dian)視機；依(yi)信號處(chu)理方式，分為(wei)(wei)模擬電(dian)視機和(he)數字電(dian)視機；依(yi)顯示(shi)器件，分為(wei)(wei)顯像管電(dian)視機和(he)固(gu)體顯示(shi)(液(ye)晶顯示(shi)、等離子體顯示(shi))電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)；依(yi)電(dian)(dian)(dian)(dian)路器件，分為(wei)電(dian)(dian)(dian)(dian)子管電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、晶(jing)體管電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、集(ji)成電(dian)(dian)(dian)(dian)路電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)；依(yi)接收聲道(dao)，分為(wei)單聲道(dao)電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、立(li)體聲電(dian)(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)等。此外，還有立(li)體電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)、多畫(hua)面電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)、多功能電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)等。家庭中用的電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)主(zhu)要是黑(hei)(hei)白(bai)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)和彩色電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)。黑(hei)(hei)白(bai)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)(ji)用來接收(shou)電(dian)(dian)(dian)視(shi)(shi)臺(tai)播(bo)送的黑(hei)(hei)白(bai)電(dian)(dian)(dian)視(shi)(shi)節(jie)目,也可以用來接收(shou)兼(jian)容制彩色電視節目(mu),但(dan)只(zhi)能(neng)重現黑白圖(tu)像和(he)伴音(yin)。它(ta)主(zhu)要(yao)由高(gao)頻頭、圖(tu)像通(tong)道(dao)、伴音(yin)通(tong)道(dao)和(he)掃描部分組(zu)成(cheng)。

LED電視是電視的未來發展趨勢，嚴格意義上的LED電(dian)視是指(zhi)完(wan)全采用(yong)(yong)LED（發光(guang)二(er)極管(guan)）做(zuo)為顯像器件的電(dian)視機，一般(ban)用(yong)(yong)于低精度顯示或戶外(wai)大屏幕。目前中國大陸地(di)區家電(dian)行業中通常所指(zhi)的LED電視嚴格的(de)名稱(cheng)是“LED背光(guang)源液晶電視”，是指以LED做為背光(guang)源的(de)液晶電視，仍(reng)是LCD的(de)一種(zhong)。它用LED光(guang)源替(ti)代了(le)傳統的(de)熒光(guang)燈(deng)管，畫面更(geng)優質，理(li)論壽命更(geng)長(chang)，制作工(gong)藝更(geng)環(huan)保，并且能(neng)使(shi)液晶顯示(shi)面(mian)板(ban)更(geng)薄(bo)。