Ungayikhetha kanjani i-diagonal yesikrini se-TV
prehistory
Amathelevishini okuqala afakwa ekukhiqizweni abonisa isithombe esebenzisa i-cathode ray tube (CRT) noma nethambo lesithombe. Ubuchwepheshe abuzange buphelele, kepha ngaleso sikhathi ukwenziwa kwesisindo ku-1934, bekunguquko. Ukungapheleli kwezobuchwepheshe kwakuyisisekelo se-kinescope. Ishubhu le-cathode ray likhiphe ukugeleza kwama-elektroni eshaya isikrini nombala wesokunxele.
Ngeshwa, ingxenye yama-elektroni idlule esibukweni futhi yafika kubabukeli, futhi le nto yabizwa ngokuthi “yi-radiation”. Ngenxa yemisebe kanye nomthelela wayo emzimbeni womuntu, bekukhona imikhawulo ebangeni lapho ungabukela khona i-TV, nemikhawulo ngesikhathi lapho kungenzeka, ngokuphepha, ukujabulela imibukiso yakho ye-TV oyithandayo. Kuphephile, bekuthathwa ibanga le-4-5 m kusikrini se-TV, uma sinikezwe izithonjana ezincane kakhulu zethelevishini ye-CRT, kunzima ukubiza ukubukwa kwe-TV okunjalo kalula.
Isimanje
Isikhathi esiningi sesidlulile selokhu kuguqulwe amathelevishini we-CRT nobuchwepheshe obusha ngokuphelele i-Plasma, i-LCD (amakristalu e-liquid), i-LED (i-LED backlighting) engena esigabeni. Ngaphandle kwe-TV ye-plasma TVs, okufana nama-CRT TVs, anezinga eliphakeme lemisebe, ama-LCD nama-TV e-LED awanalo imisebe enjalo, ngoba asebenza kumgomo ohluke ngokuphelele wokukhishwa kwezithombe.
Esikhundleni se-cathode ray tube eqhunyiswe ngama-elekthronikhi, amathelevishini e-liquid Crystal asebenzisa amaza akhanyayo adlula kwi-matrix ye-RGB yesikrini. Ukungabi bikho kwemisebe ye-elektroni kucishe kwasusa isidingo sokuhamba kude ne-TV sikude. Manje ngobuchwepheshe obusha, ibanga ongabukela kulo i-TV kungaba yinoma yini.
Konke lokhu okungenhla kuhloselwe ukukhipha umbono wobuningi bebanga lapho ungabuka khona i-TV ne-diagonal yayo, ngoba indawo yemisebe nebanga elivikelekile kunengqondo kuphela esimweni sethelevishini se-CRT, futhi lokhu kungumlando.
Kepha kunephuzu elibalulekile!
Ungayikhetha kanjani i-diagonal yesikrini se-TV?
Iphuzu elibalulekile elishiwo ngenhla yisinqumo sesikrini. Iqiniso ngukuthi uma i-TV ene-diagonal enkulu, isibonelo, ama-intshi we-55, enesinqumo sesikrini sesikrini esingu-FULL HD (i-1920x1080 pixels), lapho-ke lapho ubukela i-TV eduze, cishe ngamamitha we-1, ungabona amaphikiseli esikrinini.
Kodwa njengoba banikezwe ukuthi, njengomthetho, babukela i-TV bekude nge-1,5-2 m, kunzima kakhulu ukubabona kusuka kulawa mabanga. Ngaphezu kwalokho, amathelevishini ane-diagonal afinyelela ku-40 amayintshi manje anesixazululo ESIPHELELE se-HD, amathelevishini ane-diagonal enkudlwana asevele enezithonjana ze-Ultra HD 4K (3840 × 2160 pixels).
Ungayikhetha kanjani i-diagonal yesikrini se-TV? Impendulo ilula: yilapho ngcono. Uma unethuba lokuthenga i-TV nge-diagonal yama-intshi we-40 - kuhle kakhulu! Uma ukwazi Thenga i-TV ngamayintshi we-80 - kungcono kakhulu. Kepha bukela ukulungiswa kwesikrini se-TV, ama-elekthronikhi afinyelela ku-50 amayintshi angahle abe nesixazululo ESIPHELELE se-HD, ngoba izithonjana ezinjalo isinqumo se-Ultra HD 4K sizoba siningi kakhulu, ngoba kuzoba nzima ukubona umehluko.
Kodwa ama-TVs avela ku-52-55 amayintshi nangaphezulu kufanele vele abe nesinqumo sesikrini sesikrini se-Ultra HD 4K, ngoba ngokulungiswa okuphansi kukadigayidi omkhulu, ukhula lwasolwandle luzabonakala uma ubuka i-TV eduze.