Ta yaya bakwai-kashi nuni?

LED (ko haske emitting diode) ne Tantancewar diode cewa arfin hasken makamashi a cikin wani nau'i na "photon" idan aka gaba son zuciya ba. A lantarki muka koma ga wannan tsari na electroluminescence. A launi na bayyane haske jefarwa da LED ne a cikin kewayon daga blue to ja, kuma aka ƙaddara da na zango na jefarwa haske, wanda a nuna dogara a kan daban-daban impurities cewa an kara zuwa semiconductor abu a lokacin yi.

LEDs da abũbuwan amfãni mãsu yawa idan aka kwatanta da na gargajiya kwararan fitila da fitilu, da kuma, watakila mafi muhimmanci daga cikinsu shi ne su kananan size, karko, mai launuka iri-iri, low cost da kuma sauki samuwa, da ikon sauƙi hulɗa tare da daban-daban da sauran kayan lantarki a dijital haihuwarka.

Amma babban amfani da LEDs ne cewa saboda su kananan size, wasu daga cikinsu na iya mayar da hankali a guda m gidaje, kafa da ake kira bakwai-kashi nuni.

Bakwai-kashi nuni kunshi bakwai LEDs (Saboda haka da sunan da), da makõma murabba'i mai dari, kamar yadda aka nuna a cikin adadi. Kowace daga cikin bakwai kashi LED ake kira, tun da haske na kashi wani bangare lambobi (12 gidan goma ko hexadecimal lambar tsarin). Wani lokaci a cikin wannan kunshin amfani 8th ƙarin LED. Yana da hidima ga nuna gidan goma nufi (DP), kuma yardaswa nuna a gidan goma sulusi da murabba'i, idan biyu ko fiye da 7-kashi nuni da alaka da juna don wakiltar lambobi fiye da goma.

Kowace daga cikin bakwai kashi LED nuni da alaka da wani lamba kushin jere zubar kai tsaye a kan rectangular roba nuna alama gidaje. LED Lambobin labeled tags daga wani zuwa g, wakiltar kowane mutum kashi. Sauran lambobin sadarwa na LED segments da alaka da juna da kuma samar da wani na kowa fitarwa.

Saboda haka, a gaba da nuna bambanci ake kawota zuwa dace Lambobin LED segments a wani kebantaccen tsari, zai sa wasu daga cikin ~ angarorin da haske a sama, da kuma sauran za su ci gaba da kasancewa blacked fita, kyale ka ka haskaka da harafin da ake so na template, wanda za a nuna a kan nuni. Wannan yale mu mu wakiltar kowacce daga cikin goma Lambobin gidan goma 0 ta 9, mai 7-kashi nuni.

A general ƙarshe da aka yi amfani da yawanci domin sanin irin 7-kashi nuni. Kowane LED allo yana da biyu fitarwa haši, daya daga wanda ake kira da "anode" da sauran, bi da bi, da ake kira da "cathode". Saboda haka, bakwai-kashi LED nuna alama iya samun iri biyu kewaye yi - na kowa cathode (QA) da kuma wani na kowa anode (OA).

Bambanci tsakanin wadannan nau'o'i guda biyu na nuni ne da cewa zane na OC cathodes duk 7 segments an kai tsaye alaka da juna, da kuma a kewaye da na kowa (OA) an haɗa tsakanin anode na anodes 7 segments. Dukansu haihuwarka aiki kamar haka.

• The kowa cathode (QA) - juna cathodes dukan LED segments yana da wani dabaru matakin "0" ko da alaka da GND. The mutum segments an nuna a kan su anode wadata fitarwa sigina na "high" dabaru matakin ko dabaru "1" ta iyakance resistor don ƙirƙirar wani gaba da nuna bambanci na mutum LEDs.
• Common anode (OA) - anodes duk LED segments ake hada da wani dabaru matakin "1". Mutum segments na nuna alama haske a lokacin da kowane mutum fili da cathode zuwa ƙasa, ma'ana "0" ko low-sa alama ta wani m halin yanzu iyakance resistor.

A general, bakwai-kashi LEDs da kowa anode ne mafi m saboda mutane da yawa dabaru haihuwarka iya bukatar karin halin yanzu fiye da shi ne zai iya ba da ikon Madogararsa. Har ila yau, lura da cewa nuni kowa cathode ba kai tsaye maye kewaye ga wani nuni da kowa anode. Kuma mataimakin versa - wannan shi ne daidai da hada da LEDs a baya shugabanci, kuma ta haka ne, haske watsi ba ya faruwa.

Ko da yake shi za a iya bi a matsayin guda nuni, shi ne mai 7-kashi nuni har yanzu kunshi bakwai mutum LEDs a guda kunshin, da kuma yadda irin wannan, da LEDs bukatar da za a kare da overcurrent. LEDs emit haske kawai a lokacin da suke gudun hijira a cikin gaba shugabanci, da kuma adadin haske jefarwa ne na gwargwado ga kai tsaye halin yanzu. Yana kawai yana nufin cewa LED haske tsanani qara kamar linearly tare da kara halin yanzu. Saboda haka, domin kauce wa lalacewar da LED, wannan kai tsaye halin yanzu dole ne a sarrafawa da kuma iyakance zuwa wani hadari darajar waje iyakance resistor.

Wadannan bakwai kashi nuni ake kira a tsaye. A gagarumin hasara ne da manyan yawan dari a cikin kunshin. Don shawo kan wannan iyakancewa ya shafi tsauri iko makirci bakwai kashi nuni.

Bakwai-kashi nuna alama tsiwirwirinsu mai girma shahararsa a tsakanin rediyo yan koyo, domin shi ne dace don amfani da sauki fahimta.