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)高頻(pin)(pin)電視(shi)(shi)(shi)信號還(huan)原為視(shi)(shi)(shi)頻(pin)(pin)圖(tu)像信號和(he)低頻(pin)(pin)伴音(yin)信號，分別加給顯示器件和(he)揚聲(sheng)器，重現圖(tu)像和(he)重放(fang)聲(sheng)音(yin)。電視(shi)(shi)(shi)機的(de)分類方法很多。依(yi)顯示圖(tu)像的顏色(se)，分(fen)為黑白電視(shi)機(ji)和彩色(se)電視(shi)機(ji)；依信號(hao)處理方式，分(fen)為模(mo)擬電視(shi)機(ji)和數字電視(shi)機(ji)；依顯示器件，分(fen)為顯像管(guan)電視(shi)機(ji)和固(gu)體顯示(液晶顯示、等離子(zi)體(ti)顯示)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)；依(yi)電(dian)(dian)(dian)路器件，分為電(dian)(dian)(dian)子(zi)管(guan)(guan)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、晶體(ti)管(guan)(guan)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、集成電(dian)(dian)(dian)路電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)；依(yi)接收聲(sheng)道(dao)，分為單聲(sheng)道(dao)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)、立(li)體(ti)聲(sheng)電(dian)(dian)(dian)視(shi)(shi)機(ji)(ji)等。此外，還有立(li)體(ti)電(dian)(dian)(dian)視(shi)(shi)機(ji)、多畫面電(dian)(dian)(dian)視(shi)(shi)機(ji)、多功(gong)能(neng)電(dian)(dian)(dian)視(shi)(shi)機(ji)等。家庭(ting)中用(yong)的(de)電(dian)(dian)(dian)視(shi)(shi)機(ji)主要是黑白(bai)電(dian)(dian)(dian)視(shi)(shi)機(ji)和彩色(se)電(dian)(dian)(dian)視(shi)(shi)機(ji)。黑白(bai)電(dian)(dian)(dian)視(shi)(shi)機(ji)用(yong)來接收電(dian)(dian)(dian)視(shi)(shi)臺播送的(de)黑白(bai)電(dian)(dian)(dian)視(shi)(shi)節目,也可以用(yong)來接收兼容(rong)制(zhi)彩(cai)色(se)電(dian)視節目,但只能重現黑白(bai)圖像和(he)伴(ban)音。它主要由高頻頭、圖像通道、伴(ban)音通道和(he)掃描(miao)部分組(zu)成。

LED電視是電視的未來發展趨勢，嚴格意義上的(de)LED電(dian)視是指完(wan)全采用LED（發光二極管）做為顯像器(qi)件的(de)電(dian)視機(ji)，一般用于低(di)精度顯示或戶外大(da)屏幕(mu)。目前(qian)中國大(da)陸地區家(jia)電(dian)行業(ye)中通常所指的(de)LED電(dian)視嚴(yan)格的名稱是“LED背(bei)光(guang)源(yuan)液(ye)晶電(dian)視”，是指以LED做(zuo)為背(bei)光(guang)源(yuan)的液(ye)晶電(dian)視，仍(reng)是LCD的一種。它用(yong)LED光(guang)源(yuan)替代了傳統的熒光(guang)燈管，畫面更優質(zhi)，理論壽命更(geng)(geng)長，制作工(gong)藝(yi)更(geng)(geng)環保，并且(qie)能使液晶顯(xian)示面板更(geng)(geng)薄。