Njani uboniso-ingxenye ezisixhenxe?

LED (okanye ukukhanya esikhupha diode) yi-diode enombala nekhupha amandla ukukhanya ngohlobo i "photon" xa zityekele phambili. Ngo-elektroniki bhekisa kule nkqubo electroluminescence. Umbala yokukhanya ebonakalayo ekhutshwa yi-LED ukho kuluhlu okuluhlaza ukuya ebomvu kwaye emiselwe ecacicleyo ombala ukukhanya lobuso, nto leyo ixhomekeke ubumdaka ezahlukeneyo ezidityaniswe umbandela semiconductor ngexesha ngawo.

LED babe eziluncedo ezininzi kuthelekiswa Kuneebhalbhu eziqhelekileyo kunye nezibane, kunye, mhlawumbi kubaluleke kakhulu kuba ubungakanani yabo encinane, uqinile, iindidi imibala, ixabiso eliphantsi kunye nokufumaneka lula, ukukwazi ukuba basebenzisane lula kunye namanye amacandelo ahlukeneyo elektroniki kwiisekethe idijithali.

Kodwa ke inzuzo ziphambili LED kukuba ngenxa yobukhulu yabo, abanye kubo iqunganiswe kwiindawo izindlu enye compact, wakha ebizwa ngokuba yi--ceke ezisixhenxe ukubonisa.

Yabasixhenxe ingxenye uboniso iqulethe LED asixhenxe (kungoko igama layo), uxande kuyo, njengoko kubonisiwe kulo mzobo. Ngalinye LED asixhenxe isiqwempu kuthiwa, ukususela ukhanyiso kwicandelo eyenza amanani inxalenye (12 lokugqibela okanye njengokom inkqubo inani). Ngamanye amaxesha ngaphakathi iphakheji ebisetyenziswe 8 ezongezelelweyo LED. Inceda ukubonisa kwesishumi (DP), ngaloo ndlela ukuvumela ukubonisa iqhezu wokugqibela, ukuba ababini okanye ngaphezulu imiboniso-7-ceke elidityaniswe kunye ukubonisa amanani ngaphezu kweshumi.

Ngasinye kwezisixhenxe kwicandelo LED isiboniso oludityaniswe ezichaphazelekayo umqolo zoqhagamshelwano pad elahliweyo ngqo kwi buxande zeplastiki izindlu isibonisi. nabo LED enombhalo tags ukusuka ukuya g, emele kwilungu ngalinye ngamnye. Abanye abafowunelwa uziziqwempu LED adityanisiweyo kwaye enze imveliso eqhelekileyo.

Ngoko ke, lo icala phambili inikezelwa abafowunelwa efanelekileyo LED ziqwempu ngendlela ethile, kuya kubangela ezinye ziqwempu zikhanya, kwaye abanye uzawuhlala blacked phandle, elikuvumela ukuba ukhanyise igama olifunayo le template, eza baboniswa kwidispleyi. Oku kukuvumela ukuba ukumela nganye kwimivo ezilishumi 0 ukuya 9, umboniso 7-ingxenye.

Esi sigqibo ngokubanzi ezisetyenziswa ukugqiba udidi yoboniso 7-ingxenye. screen nganye LED uye izihlanganisi output ezimbini, enye ekuthiwa 'anode "kunye namanye, ngokulandelelana, ubizwa ngokuba" cathode ". Ngoko ke, i-ingxenye ezisixhenxe LED ukuze iindidi ezimbini yokusebenza yesekethe - a cathode eqhelekileyo (QA) kunye anode eqhelekileyo (OA).

Umahluko phakathi kwezi ntlobo zimbini ze lemiboniso kukuba uyilo cathodes OC zonke 7 ziqwempu ezidibene ngqo omnye komnye, yaye beesekethe eqhelekileyo (OA) elidityaniswe phakathi anode of anodes 7 komsindo. Zombini iisekethe zisebenze ngolu hlobo.

• Le cathode common (QA) - cathodes oqhagamshelwano phakathi kuzo zonke ziqwempu LED na inqanaba logic "0" okanye idityaniswe GND. Ezi ziqwempu ngamnye ziboniswe kwi zabo anode unikezelo output umqondiso kwinqanaba logic "phezulu" okanye logic "1" ngokusebenzisa resistor umda ukudala ukuqhubela phambili lwe LED ngamnye.
• anode Common (OA) - anodes onke amacandelo eLED ezidibeneyo inqanaba logic "1". Iziqwempu ngabanye kwizalathisi ukukhanya xa ezimbaxa ngamnye le cathode uyaphantsi, kusengqiqweni "0" okanye umqondiso ophantsi-grade ngokusebenzisa esihambelanayo resistor umda yangoku.

Ngokubanzi, ii-LED-ingxenye ezisixhenxe anode eziqhelekileyo athandwa kakhulu kuba iziphaluka ezininzi logic kungafuna yangoku ngaphezu uyakwazi ukunika umthombo wamandla. Kwakhona qaphela ukuba umboniso cathode eqhelekileyo asiyonto wesekethe ngqo replacement ukuba sibonise kunye anode eqhelekileyo. And vice versa - oku kulingana ngexabiso ngokubandakanywa LED kwicala umva, yaye ngaloo ndlela, ukukhutshwa ukukhanya lungenzeki.

Nangona lunokunyangwa njenge umboniso owodwa, ngumbonisi 7-ingxenye nangoku luqulathe LED ezisixhenxe umntu ipasile enye, yaye ngenxa yoko, i-LED kufuneka bakhuselwe coil. LED ihlaba ukukhanya kuphela xa bedinga kwicala phambili, kwaye isixa ukukhanya lobuso kukuba ngokomlinganiselo yangoku ngqo. Oku kuthetha kuphela ukuba ukukhanya LED kwandisa malunga linearly ngokwandayo ngoku. Ngoko ke, ukuze uphephe umonakalo LED, le yangoku ngqo kufuneka ezilawulwayo kuphela kwixabiso ekhuselekileyo resistor umda lwangaphandle.

Ezi iziboniso ezisixhenxe ingxenye kuthiwa static. A Ububi okuphawulekayo inani elikhulu izikhonkwane kwiphakheji. Ukuze yoyiswe le umda usebenza scheme ulawulo olutshintshatshintshayo ezisixhenxe ingxenye ukubonisa.

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