Crt

Wani nau'in bututu da ake amfani da shi a cikin tsofaffin na'urorin lantarki, gami da talabijin, na'urori masu lura da kwamfuta, oscilloscopes, da nunin radar. CRT tana aiki ta hanyar harba rafi na electrons daga bindigar lantarki a allon phosphorescent, yana haifar da fitar da haske da ƙirƙirar hoto.

A cikin CRT, bindigar lantarki tana a bayan bututun, kuma jerin juzu'i na jujjuyawar da ke wuyan bututun suna sarrafa hanyar igiyar lantarki, suna duba ta a kan allo a tsarin da aka sani da raster. An ƙirƙiri launukan hoton ta hanyar haɗa ƙarfi daban-daban na ja, kore, da shuɗin phosphor akan allon.

CRTs sun kasance fasahar farko da aka yi amfani da su a cikin talabijin da na'urori masu lura da kwamfuta, amma an maye gurbinsu da nunin faifai, kamar su. LCD, LED, Da kuma OLED, waxanda suka fi sirara, masu sauƙi, kuma sun fi ƙarfin kuzari. Duk da haka, ana amfani da CRT a wasu aikace-aikace na musamman, kamar hoton likitanci, kuma ana daraja su don babban bambanci, baƙar fata mai zurfi, da rashin motsi.