Momwe mungasankhire mawonekedwe a TV

prehistory

Mawayilesi oyambilira omwe amapangidwa adawonetsa chithunzi pogwiritsa ntchito cathode ray chu (CRT) kapena chubu chithunzi. Tekinolojeyi sinali yangwiro, koma pa nthawi yomwe kupanga kwa misa kudayambitsidwa mu 1934, kudali kusintha. Kupanda ungwiro kwa ukadaulo kunali maziko a kinescope. Tube la cathode ray linatulutsa ma elekitoni omwe amayenda pazenera ndikuwasiya mtundu.

 

 

Tsoka ilo, gawo la ma elekitoni linadutsa pazenera ndikufika pa wowonera, ndipo izi zimatchedwa "radiation". Chifukwa cha ma radiation ndi momwe zimakhudzira thupi la munthu, panali zoletsedwa pamtunda momwe mungawonere TV, ndi zoletsa panthawi yomwe zinali zotheka, mosatekeseka, kusangalala ndi makanema omwe mumawakonda pa TV. Otetezeka, idawerengedwa ngati mtunda wa 4-5 m pa TV, atapatsidwa mawonekedwe apang'ono kwambiri a ma TV a CRT, ndizosavuta kuyitanitsa kuwonera TV koteroko.

Zamasiku ano

Nthawi yayitali yapita kuchokera pomwe kusintha kwa ma TV a CRT ndi matekinoloje atsopano a Plasma, LCD (makhiristo amadzimadzi), LED (kuwunikira kwa LED) kwalowa. Kupatula ma TV a plasma, omwe, ngati ma TV a CRT, omwe anali ndi ma radiation ambiri, ma LCD ndi ma TV a LED sakhala ndi radiation, chifukwa amagwira ntchito mosiyana ndi kutulutsa kwazithunzi.

 

 

M'malo mwa chubu cha cathode ray chophulika ma elekitoni, ma TV a galasi amadzimadzi amagwira ntchito pogwiritsa ntchito mafunde owala omwe amadutsa mumayendedwe a RGB. Kusakhalapo kwa ma elekitoni a elekitoni kunatsala pang'ono kuthetsa kufunika kochoka pa TV kupita kumalo otetezeka. Tsopano ndi matekinoloje atsopano, mtunda womwe mumatha kuwonera TV ukhoza kukhala chilichonse.

Zonsezi pamwambapa cholinga chake ndikuthamangitsa malingaliro amachitidwe omwe amakhala nawo kuchokera pomwe ungawonere TV ndi ma diagonal, chifukwa dera lama radiation ndi mtunda wotetezeka zimamveka pokhapokha ngati ma TV a CRT, ndipo uwu ndi mbiri.

 

Koma pali mfundo yofunika!

Kodi mungasankhe bwanji chiwonetsero chapa TV?

Mfundo yofunika yomwe yatchulidwa pamwambapa ndi kusintha kwa zenera. Chowonadi ndi chakuti ngati TV yokhala ndi diagonal yayikulu, mwachitsanzo, mainchesi a 55, ikakhala ndi mawonekedwe a Screen HD (1920x1080 pixels), ndiye kuti mukayang'ana TV pafupi kwambiri, pafupifupi mamitala a 1, mutha kuwona zithunzi.

Koma popeza kuti, monga lamulo, amawonera TV kuchokera kutali kuchokera pa 1,5-2 m, ndizovuta kwambiri kuwaona kuchokera pamtundawu. Kuphatikiza apo, ma TV okhala ndi ma diagonal ofika mpaka ma 40 mainchesi tsopano ali ndi malingaliro a Full HD, ma televoni okhala ndi dixonal yokulirapo ali ndi mapikisidwe a Ultra HD 4K (3840 × 2160 pixels).

 

 

Kodi mungasankhe bwanji chiwonetsero chapa TV? Yankho ndi losavuta: makamaka kuli bwino. Ngati muli ndi mwayi wogula TV ndi ma diagonal a mainchesi a 40 - ndizabwino! Ngati mungathe Gula TV mainchesi a 80 - ndibwinonso. Koma onerani mawonekedwe a TV screen, zamagetsi mpaka 50 mainchesi atha kukhala ndi mawonekedwe a Full HD, chifukwa ma diagonals oterowo Ultra HD 4K chisankho chikhala chambiri, chifukwa sizingatheke kuzindikira kusiyana.

 

 

Koma ma TV kuchokera ku 52-55 mainchesi ndi pamwambapa ayenera kukhala ndi Ultra HD 4K screen screen, chifukwa ndi mawonekedwe apansi pa diagonal yayikulu, kuuma kumawonekera mukamaonera TV mosamala.