Yadda za a zabi diagonal na allo na TV

prehistory

Gidan talabijin na farko da aka saka a cikin samarwa sun nuna hoto ta amfani da bututu masu ɗora (CRT) ko bututun hoto. Fasahar ba ta kasance cikakke ba, amma a lokacin da aka ƙaddamar da samar da taro a 1934, juyin juya hali ne. Rashin ingancin fasahar shine asalin kinescope. Jirgin ruwan cathode ray ya fitar da wani irin wutan lantarki wanda ya buge allon da launi na hagu.

 

 

Abin takaici, wani ɓangare na wayoyin suna wucewa ta allon kuma suka isa mai kallo, kuma wannan abun da ake kira "radiation". Sakamakon radadi da tasirinsa ga jikin ɗan adam, akwai ƙayyadaddu a kan nesa da zaku iya kallon talabijin, da ƙuntatawa akan lokacin da ya yuwu, in an zauna lafiya, don jin daɗin wasannin TV da kuka fi so. Babu lafiya, an yi la'akari da nisa na 4-5 m zuwa allon talabijin, an ba da ƙananan diagonals na telebijin na CRT, yana da wuya a kira irin wannan kallon TV ɗin ya dace.

Modern zamani

Lokaci mai yawa ya wuce tun bayan juyin juya halin telebijin na CRT da gabaɗaya sabbin fasahar Plasma, LCD (lu'ulu'u mai ruwa), LED (walƙiyar LED) sun shiga matakin. Ban da fitattun TVs, wanda, kamar CRT TVs, suna da siginar haske, LCD da TV TV ba su da irin wannan hasken, saboda suna aiki ne a kan ka’idar gaba daya ta kayan hoto.

 

 

Maimakon bututu mai ɗorewa ta cathode ray wanda electrons ya sanya, televisions mai ruwa mai ruwa yana aiki ta amfani da raƙuman haske waɗanda ke ratsa matatun RGB na allo. Rashin hasken wutar lantarki na kusan cire cire buƙatar cirewa daga talabijin zuwa nesa nesa. Yanzu tare da sabbin fasahohi, nesa da zaku iya kallon talabijin na iya zama komai.

Dukkan abubuwan da aka ambata a sama an yi niyya don kawar da ra'ayi na tsari na nesa daga inda zaku iya kallon TV da diagonal dinsa, saboda Yankin radiation da amintaccen nesa ya ba da ma'ana kawai a cikin yanayin telebijin na CRT, kuma wannan shine tarihi.

 

Amma akwai wani muhimmin batun!

Yaya za a zabi diagonal na allo na TV?

Wani muhimmin batun da aka ambata a sama shine ƙudurin allo. Gaskiyar ita ce idan TV tare da babban diagonal, alal misali, inci 55, yana da ƙuduri na FULL HD (pixels 1920x1080), to lokacin da ka kalli TV ɗin kusa, kusan mitimita 1, zaka iya ganin pixels akan allon.

Amma da aka ba wannan, a matsayin mai mulkin, suna kallon TV daga nesa na 1,5-2 m, yana da matukar wahala a gan su daga waɗannan nesa. Bugu da ƙari, televisions tare da diagonal har zuwa inci na 40 yanzu suna da FULL HD ƙuduri, televisions tare da babban diagonal tuni sun sami ƙudurin Ultra HD 4K (3840 × 2160 pixels).

 

 

Yaya za a zabi diagonal na allo na TV? Amsar mai sauki ce: mafi sauki. Idan kuna da damar sayen TV tare da diagonal na inci 40 - hakan yayi kyau! Idan zaka iya saya TV tare da inci 80 - ya ma fi kyau. Amma kalli ƙudurin allo na TV, kayan lantarki har zuwa inci na 50 na iya samun FULAS HD ƙuduri, don irin waɗannan diagonals Ultra HD 4K ƙuduri zai yi yawa, tunda ba zai yiwu a lura da bambanci ba.

 

 

Amma TVs daga inci 52-55 da sama ya riga sun sami ƙarar allo allo HD HD 4K, saboda tare da ƙananan ƙuduri akan babban diagonal, ƙwaƙwalwar ƙwaƙwalwa zai zama sananne lokacin kallon TV a hankali.