ethula:

Endaweni yobuchwepheshe esheshayo yanamuhla, amabhodi esekethe aphrintiwe (ama-PCB) adlala indima ebalulekile ekuqhubekiseni ukuqanjwa okusha kuzo zonke izimboni.Izibonelo ze-PCB ziyisisekelo sokuhlola kanye nokucwengisiswa kwemiklamo yomkhiqizo, ukuqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana namazinga ekhwalithi kanye nokulindelwe yikhasimende.Njengoba amabhizinisi nabantu ngokufanayo befuna izimboni ezingcono kakhulu zezidingo zabo ze-PCB prototyping, ukuthola umlingani othembekile kuba bucayi.Kulokhu okuthunyelwe kwebhulogi, singena ngokujulile emhlabeni we-PCB prototyping futhi sixoxe ngezici ezibalulekile okufanele uzicabangele lapho ukhetha imboni engcono kakhulu ye-pcb prototype yezidingo zakho.

Ukuqonda Ukubaluleka Kwe-PCB Prototyping:

I-PCB prototypes iyisitebhisi esibalulekile ekuthuthukisweni komkhiqizo.Banikeza onjiniyela nabaklami inkundla ebambekayo yokuzama imibono yabo, ukuhlola ukusebenza nokuhlonza noma imaphi amaphutha edizayini angaba khona, ekugcineni aphumele kumkhiqizo wokugcina ocolisisiwe noyimpumelelo.Ikhono lokuphindaphinda ngokushesha kanye nokwenza ngcono ama-prototypes lingasheshisa kakhulu inqubo yokuthuthukiswa, ngaleyo ndlela kwehlise isikhathi sokumaketha futhi kwandise ukwaneliseka kwamakhasimende.

Kungani kubalulekile ukukhetha isitshalo esifanele:

Ukuthola imboni ehamba phambili yokuletha ama-prototypes e-PCB ekhwalithi ephezulu kubalulekile ngenxa yezizathu ezimbalwa.Okokuqala, amafekthri ahloniphekile azoba nobuchwepheshe bezobuchwepheshe kanye nemishini yesimanje edingekayo ukuze kukhiqizwe ama-prototypes anembile.Ngaphezu kwalokho, imboni enolwazi izoqasha abasebenzi abanamakhono abakwazi ukuphatha imiklamo eyinkimbinkimbi futhi baxazulule ngempumelelo noma yiziphi izinkinga ezingase ziphakame ngesikhathi sokukhiqiza.Okokugcina, ukusebenza nefekthri enikeza ukwesekwa kwamakhasimende okuhle kakhulu kanye nokuxhumana okufika ngesikhathi kuqinisekisa ukuzizwisa kwe-prototyping engenamthungo nengenazinkathazo.

Izinto okufanele uzicabangele lapho ukhetha isitshalo esihle kakhulu:

1. Ubungcweti namakhono:

Lapho uhlola izimboni ezingaba khona ze-PCB prototyping, hlola ulwazi lwazo lobuchwepheshe namandla ngokuqhathanisa nezidingo zakho ezithile zephrojekthi.Bheka izimboni ezinolwazi ekuphatheni izinhlobo ezahlukene ze-PCB, osayizi nobuchwepheshe.Kubalulekile ukukhetha ifekthri engahlangabezana nezidingo zakho ezihlukile zedizayini futhi uqinisekise ukuhlangana okufanele.Futhi, buza ngenqubo yabo yokulawula ikhwalithi ukuze uqinisekise ukuthi yonke i-prototype ekhiqizwayo ihlangabezana namazinga aphezulu kakhulu embonini.

I-Capel inezinzuzo ezimbalwa ngokolwazi lobuchwepheshe namandla ku-PCB prototyping:

Umuzwa obanzi:
U-Capel uneminyaka engu-15 yokuhlangenwe nakho okubanzi kwe-PCB prototyping, ephathe ama-PCB azo zonke izinhlobo, osayizi, kanye nobuchwepheshe.Baye babamba iqhaza kumaphrojekthi angaphezu kwe-100 kulo mkhakha, befakazela ubuhlakani babo bezobuchwepheshe.
Izixazululo Ngokwezifiso:
Njengoba esesebenze amacala angaphezu kuka-200,000 eminyakeni eyi-15 edlule, uCapel uyaqonda ukuthi iphrojekthi ngayinye idinga ukucaciswa komklamo okuhlukile.Babeka eqhulwini ukuhlangabezana nezidingo ezithile zamakhasimende ukuze kuqinisekiswe ukuhlangana okufanele nokusebenza kwama-prototypes.
Ithimba Elinekhono:
I-Capel inabasebenzi abanamakhono angaphezu kuka-1,500, okuhlanganisa nonjiniyela abangochwepheshe abangaphezu kuka-300 nabasebenzi be-R&D.Ithimba liqukethe ochwepheshe abaneminyaka engu-15 yesipiliyoni futhi banolwazi oluningi emkhakheni we-PCB prototyping.Ubuchwepheshe babo bezobuchwepheshe bubenza bakwazi ukubhekana namaphrojekthi ayinkimbinkimbi ngesivinini, ukusebenza kahle nokunemba.
Isikhungo sesimanjemanje:
Isikhungo sokukhiqiza saseCapel sifakwe imishini ethuthukisiwe nobuchwepheshe obudingekayo ekukhiqizeni i-prototype enembile.Lokhu kuqinisekisa ukukhiqizwa kwekhwalithi ephezulu futhi kuhlangabezana nezindinganiso zomkhakha.
Ikhwalithi yokulawula:
U-Capel uthatha ukulawula kwekhwalithi njengento ebaluleke kakhulu.Banenqubo eqinile yokuhlola nokuqinisekisa ikhwalithi yesibonelo ngasinye sokukhiqiza.Lokhu kuzibophezela kwikhwalithi kuqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana namazinga aphezulu embonini.
Ukuthuthukiswa Okuqhubekayo:
I-Capel izibophezele ekuthuthukiseni ngokuqhubekayo amakhono ayo obuchwepheshe.Batshala imali ocwaningweni nasekuthuthukisweni futhi bathola inqwaba yamalungelo obunikazi ocwaningo nentuthuko, bahambisana nenqubekelaphambili yakamuva ku-PCB prototyping, futhi banikeze amakhasimende izisombululo ezisezingeni eliphezulu.

Sekukonke, ubuchwepheshe be-Capel, isipiliyoni, nokuzibophezela kwikhwalithi kubenza babe ukukhetha okuthembekile kwezidingo zakho ze-PCB prototyping.

2. Amandla okukhiqiza nesikhathi sokushintsha:

Cabangela umthamo wefekthri kanye nesikhathi sokushintsha.Hlola ikhono labo lokusingatha ukukhiqizwa kwe-prototype encane kanye nenkulu.Izikhathi ezimisiwe zibalulekile ekugcineni amashejuli ephrojekthi kanye nokuqinisekisa impendulo efika ngesikhathi mayelana nokuphindaphinda kwemiklamo.Bheka imboni engahlangabezana ngokuqhubekayo nezinsuku zokugcina zephrojekthi yakho ngaphandle kokwehliswa kwekhwalithi.

I-Capel inezinzuzo ezilandelayo mayelana namandla okukhiqiza kanye nesikhathi sokushintsha:

I-Scalability:
I-Capel inamandla okukhiqiza aqinile, anamandla okukhiqiza ngaphezu kwe-150,000 square metres ye-FPC kanye ne-Rigid-Flex PCBs ngenyanga, 80,000 wamamitha-skwele wama-PCBs ngenyanga, kanye namandla okuhlanganisa izingxenye ezingu-150,000,000 ngenyanga.Lokhu kubavumela ukuthi baphathe kokubili ukukhiqizwa kwe-prototype encane kanye nenkulu.Kungakhathaliseki ukuthi udinga ama-prototype ambalwa noma iqoqo elikhulu, izimboni ezintathu ze-Capel ezichazwe kahle: ifektri ye-FPC ne-Rigid-Flex PCB, ifekthri ye-PCB, nefekthri ye-SMT/DIP, ingaphendula ngokushesha futhi ihlangabezane nezidingo zakho zokukhiqiza ngamakhono enqubo ethuthukisiwe nevuthiwe.
Izikhathi Zokulethwa Ezivumelanayo:
U-Capel uyakuqonda ukubaluleka kwemigqa yesikhathi yephrojekthi kanye nesidingo sempendulo efika ngesikhathi ekuphindaphindweni kwedizayini.Banikeza izikhathi zokulethwa eziguquguqukayo, nethimba lezobuchwepheshe lamahora angu-24 elitholakalayo ukuze linikeze ngezinsizakalo ezithembekile nezisheshayo ze-PCB yesibonelo.Ama-oda we-PCB yeqoqo elincane angalethwa ezinsukwini ezi-5-6, kuqinisekiswe ukuthi ama-prototypes akho akhiqizwa futhi alethwa phakathi nezikhathi ozilindele.
Izinqubo Zokukhiqiza Eziphumelelayo:
Izimboni ezintathu zaseCapel zisebenza ndawonye ngenqubo yokukhiqiza ezenzakalelayo futhi ethuthukisiwe ukuze kuqinisekiswe ukusebenza kahle kanye nokunciphisa isikhathi sokushintsha.Ithimba labo elinekhono kanye nemishini ethuthukisiwe ibenza bakwazi ukukhiqiza ngokushesha ama-prototypes ngaphandle kokuyekethisa ikhwalithi.
Agile Production Planning:
I-Capel ithuthukisa futhi yamukele amasu okuhlela ukukhiqiza okusheshayo ukuzivumelanisa nezimfuneko ezishintshayo zephrojekthi nezinto eziza kuqala.Bangakwazi ukulungisa izinhlelo zabo zokukhiqiza futhi babele izinsiza ngokufanele ukuze bahlangabezane nezinsuku zokugcina eziphuthumayo noma bamukele ukuphindwaphindwa kwemiklamo nokulungiswa.
Sula Iziteshi Zokuxhumana:
I-Capel ikwazisa ukuxhumana okuvulekile nokusobala namakhasimende abo.Banikeza izibuyekezo ezivamile ngenqubekelaphambili yokukhiqiza kwakho futhi baphendule ngokushesha kunoma imiphi imibuzo noma ukukhathazeka okungenzeka ube nakho.Lokhu kusiza ukugcina iziteshi zokuxhumana ezicacile futhi kuqinisekisa ukuthi noma yikuphi ukubambezeleka okungaba khona noma izinkinga zixazululwa ngokushesha.
Ukuzibophezela Kukhwalithi:
Nakuba ukuphothulwa kwephrojekthi ngesikhathi kubalulekile, uCapel akalokothi ayekethise ikhwalithi.Banohlelo olubanzi lokulawula ikhwalithi kanye nezinqubo eziqinile zokuqinisekisa ikhwalithi ezikhona ukuze kuqinisekiswe ukuthi i-prototype ngayinye ihlangabezana namazinga aphezulu kakhulu.Lokhu kuzibophezela kwikhwalithi kuqinisekisa ukuthi uthola ama-prototypes athembekile futhi asebenza kahle phakathi nesikhathi esibekiwe.

Sekukonke, amandla okukhiqiza e-Capel, izinqubo ezisebenza kahle, izikhathi zokulethwa ezivumelana nezimo, nokuzibophezela kwikhwalithi kubenza babe uzakwethu onokwethenjelwa ukuze bahlangabezane nezidingo zakho zokukhiqiza ngenkathi ugcina amashejuli ephrojekthi.

3. Intengo nokusebenza kahle kwezindleko:

Nakuba izindleko ziyisici esibalulekile, akufanele kube ukuphela kwesici esinqumayo ekukhetheni ifekthri ye-PCB yesibonelo.Cabangela ibhalansi phakathi kwentengo nekhwalithi lapho ukhetha ifekthri.Izinketho ezinenani eliphansi kakhulu zingafaka engcupheni ikhwalithi yomkhiqizo, kubangele ukubambezeleka noma kusetshenzwe kabusha.Cela izingcaphuno ezinemininingwane ezivela ezimbonini ezihlukene futhi uhlole inani lentengo ezinikezayo.Ukusebenza nefekthri ehloniphekile ehlinzeka ngezixazululo ezingabizi kuzoletha imiphumela emihle kakhulu ngokuhamba kwesikhathi.

I-Capel inikeza izinzuzo ezimbalwa mayelana nentengo nokusebenza kahle kwezindleko:

Amanani Wokuncintisana:
U-Capel uyakuqonda ukubaluleka kwamanani okuncintisana embonini ye-PCB prototyping.Balwela ukunikeza izixazululo ezibizayo ngaphandle kokuyekethisa ikhwalithi.Ngokusebenzisa izinqubo ezithuthukisiwe zokukhiqiza, ukwabiwa kwezinsiza ngendlela ephumelelayo kanye neminotho yesikali, i-Capel iyakwazi ukugcina izindinganiso zekhwalithi ephezulu kuyilapho isala inokuncintisana kwentengo.
Amanani Asobala:
I-Capel inikeza izingcaphuno ezinemininingwane zezinsizakalo ze-PCB prototyping, okukuvumela ukuthi uhlole inani lentengo lezinto ezinikezwayo.Izingcaphuno zabo zihlanganisa ukuhlukaniswa kwazo zonke izindleko ezihambisanayo, ukuqinisekisa ukuba sobala kumanani entengo.Lokhu kukuvumela ukuba wenze isinqumo unolwazi ngokusekelwe kubhajethi yakho kanye nezidingo.
Inani lemali:
Ukuzibophezela kukaCapel ekwenzeni izindleko kudlula amanani entengo.Bagxila ekuletheni inani lemali ngokuletha ama-prototypes ahlangabezana nokucaciswa kwakho okunembile kanye nokulindelwe kwekhwalithi.Ithimba labo elinekhono, okokusebenza kwesimanjemanje kanye nezinqubo ezibanzi zokulawula ikhwalithi ziqinisekisa ukuthi uthola ama-prototypes asebenza ngokwethembeka futhi ahlangabezana namazinga omkhakha, okunciphisa ubungozi bokubambezeleka noma ukusebenza kabusha.
Ukonga izindleko zesikhathi eside:
Nakuba izindleko zokuqala ze-PCB prototype zingase zicatshangelwe, kubalulekile futhi ukucabangela ukonga izindleko zesikhathi eside.Ukuzibophezela kuka-Capel kukhwalithi kusho ukuthi uzothola ama-prototypes akhelwe ukuhlala, anciphisa isidingo sokusebenza kabusha noma ukushintshwa.Lokhu kongela isikhathi nemali ngokuhamba kwesikhathi ngokunciphisa iziphazamiso zokukhiqiza nokuqinisekisa ukwethembeka komkhiqizo wokugcina.
Isithunzi Nokwethenjelwa:
I-Capel iyimboni ehloniphekile eyaziwa ngokuhlinzeka ngezixazululo ezingabizi kakhulu.Banomlando oqinisekisiwe wokuletha ama-prototypes ekhwalithi ephezulu ngesikhathi nangaphakathi kwesabelomali.Ukusebenza nefekthri ethembekile efana ne-Capel kusiza ukunciphisa ubungozi obuhlobene nezinketho ezinenani eliphansi ezingafaka engcupheni ikhwalithi, okuholela ekubambezelekeni okungaba khona noma izindleko ezengeziwe.

Sekukonke, i-Capel inikeza amanani ancintisanayo, ukucaphuna okusobala, inani lemali, ukonga izindleko zesikhathi eside, kanye nesithunzi esiqinile.Lezi zici zinomthelela ekusebenzeni kwayo kwezindleko zizonke futhi zikwenze kube ukukhetha okuqinile kwezidingo ze-PCB prototyping.

4. Ukuvumelana nezimo nokwenza ngokwezifiso:

Amaphrojekthi ahlukene adinga amazinga ahlukene okwenza ngokwezifiso.Qiniseka ukuthi ukhetha ifekthri evumelana nezimo ukuze ivumelane nezimfuneko zakho ezithile, noma ngabe usebenzisa izinto ezihlukile, ezihlanganisa imiklamo eyinkimbinkimbi, noma ihlinzeka ngamasevisi engeziwe njengokwelashwa kwendawo noma ama-PCB aguquguqukayo.Isitshalo esinamakhono emisebenzi eminingi sizokuvumela ukuthi ubone umbono wakho futhi uzuze imiphumela engcono kakhulu.

I-Capel iletha izinzuzo eziningana ekuguquguqukeni kokukhiqiza kwe-PCB nokwenza ngokwezifiso:

Izinto ezingenziwa ngendlela oyifisayo:
Eminyakeni eyi-15 edlule, uCapel uqongelele ulwazi olucebile ekwenzeni ngokwezifiso ama-PCB enqubo ekhethekile evela emikhakheni engaphezu kwe-100 kanye namacala ephrojekthi angaphezu kuka-200,000 ukuze ahlangabezane nezidingo ezithile zemboni.Bayaqonda ukuthi amaphrojekthi ahlukene adinga izinto ezihlukile.Bayakwazi ukusebenza ngezinto ezihlukahlukene ezihlanganisa i-FR-4 yendabuko kanye nezinto ezikhethekile ezifana ne-high frequency laminates, ama-substrates aguquguqukayo kanye nama-PCB aqinile-flex.I-Capel ingahlangabezana nezidingo zakho ezithile zephrojekthi ngokunikela ngezinketho zezinto ezibonakalayo ezenziwe ngokwezifiso.
Izindawo zokuhlala ezengeziwe e-Complex Designs:
I-Capel inobuchwepheshe nengqalasizinda ethuthukisiwe yokusingatha imiklamo eyinkimbinkimbi.Kungakhathaliseki ukuthi udinga amaphethini ayinkimbinkimbi, ububanzi bokulandela umkhondo noma isikhala, izendlalelo eziningi, izimbobo ezingaboni futhi ezingcwatshwe, noma i-impedance elawulwayo, i-Capel ingahlangabezana nezidingo zakho ze-PCB prototyping.Izinqubo zabo zokukhiqiza ezithuthukile nezintsha, ezihambisana namandla enqubo yokuvuthwa, zibenza bakwazi ukukhiqiza ama-PCB esibonelo ngokunemba okuphezulu, ukuminyana okuphezulu kanye nekhwalithi ephezulu.
Amasevisi Engeziwe:
Ngokungeziwe ekwenziweni kwe-PCB, i-Capel inikeza izinsiza ezengeziwe zokuthuthukisa ukwenziwa ngokwezifiso kwama-prototypes.Banikezela ngezinketho zokwelashwa ezingaphezulu njenge-HASL, ENIG, OSP, nesiliva lokucwiliswa ezingathuthukisa ukusebenza nokuqina kwe-PCB yakho.I-Capel futhi inemboni yayo ekhiqiza ama-PCB aguquguqukayo futhi aqinile, alungele izinhlelo zokusebenza ezidinga izici zefomu eligobile noma elihlangene.
Amandla Ahlukahlukene:
Izikhungo zokukhiqiza zaseCapel zinemisebenzi eminingi.Batshale imali emishinini yesimanje ukuze bahlangabezane nezidingo ezahlukahlukene zokukhiqiza kusukela ekuhlolweni komklamo webhodi lesibonelo kuya ekuhlolweni kokukhiqizwa nokuhlanganiswa.Lokhu kubenza bakwazi ukuhlangabezana nezinhlobonhlobo zezidingo zokwenza ngendlela oyifisayo kusukela kuma-prototypes amaqoqo amancane kuya emiqhudelwaneni emikhulu yokukhiqiza.Ngokuguquguquka kwayo, i-Capel ingashintshwa ukuze ihambisane nezinhlelo ezihlukahlukene zephrojekthi futhi ihlangabezane nezidingo eziguqukayo.
Ukusekelwa Kwe-Prototyping:
U-Capel uyakuqonda ukubaluleka kwe-prototyping enqubweni yokuthuthukisa umkhiqizo.Basekela ukukhiqizwa kwe-prototype, okukuvumela ukuthi uphindaphinde imiklamo futhi wenze izinguquko ezidingekayo ngaphambi kokukhiqizwa kochungechunge.I-Capel ingakunikeza izikhathi zokushintsha zesibonelo esisheshayo ukuze ugcine amaphrojekthi akho ekushejuli.

Sekukonke, amandla e-Capel avumelana nezimo namandla okwenza ngokwezifiso asemandleni akhe okusebenzisa izinto ezenziwe ngokwezifiso, ukwamukela imiklamo eyinkimbinkimbi, ukuhlinzeka ngezinsizakalo ezingeziwe, amandla okukhiqiza ahlukahlukene, kanye nokuhlinzeka ngosekelo lwe-prototyping.Lezi zinzuzo zenza i-Capel ihlangabezane nezidingo zakho ezithile futhi ilethe ama-PCB afana nombono wakho nemiphumela oyifunayo.

Capeligqama njengesikhungo sokulinganisa se-PCB ngezizathu ezimbalwa:

Enye yamandla abo ayisihluthulelo aukuzibophezela kochwepheshe bezobuchwepheshe.Ithimba labo lonjiniyela abanolwazi nochwepheshe bahlala benolwazi ngamathrendi akamuva embonini kanye nobuchwepheshe.Lokhu kuqinisekisa ukuthi banolwazi namakhono adingekayo ukuze babhekane nemiklamo eyinkimbinkimbi futhi banikeze okokufaka okubalulekile phakathi nenqubo yokwenza i-prototyping.Ubuchwepheshe babo bubenza bakwazi ukunikeza ukwesekwa kwedizayini kanye nezincomo zokuthuthukisa ukuthuthukisa ukusebenza kwe-PCB nokwenziwa.

Mayelanaumthamo wokukhiqiza, Izakhiwo ze-Capel ezisezingeni eliphezulu kanye nemishini yesimanje ibenza bakwazi ukuhlangabezana nezidingo eziningi zokukhiqiza.Kusukela kuma-prototypes amancane kuya ekukhiqizweni ngobuningi, banamandla okuphatha kahle amasayizi amaphrojekthi ahlukene futhi balethe ama-PCB ekhwalithi ephezulu ngaphakathi kwezikhathi okuvunyelwene ngazo.Amandla abo okukhiqiza adlulela ezinhlotsheni ze-PCB ezahlukahlukene kufaka phakathi ama-laminates amafrikhwensi aphezulu, ama-PCB aqinile aguquguqukayo nama-substrates aguquguqukayo.Lokhu kuguquguquka kuzivumela ukuthi zihlangabezane nezidingo ezihlukile zezimboni nezinhlelo zokusebenza ezahlukahlukene.

Enye inzuzo yokusebenza neCapel iyonaamanani okuncintisana.Bahlinzeka ngezixazululo ezingabizi ngaphandle kokuyekethisa ikhwalithi ye-PCB nokusebenza.Ikhono labo lokwenza izinto ngokwezifiso kanye nokusebenza kuqinisekisa ukuthi uthola isixazululo esingabizi kakhulu esihambisana nezidingo zakho zephrojekthi.I-Capel iyakuqonda ukubaluleka kokukhulisa inani kumakhasimende ayo futhi ilwela ukunikeza izinketho ezincintisanayo zamanani.

Ukwengeza, uCapel ukholelwa kakhuluukwakha ubudlelwano besikhathi eside namakhasimende ayo.Abanikezi nje umkhiqizo wekhwalithi;baletha umkhiqizo wekhwalithi.Baba ozakwethu ohambweni lwakho lokusungula izinto ezintsha.Bazibophezele ekunikezeni isevisi yamakhasimende enhle kakhulu nokwakha ubudlelwano obuthembekile.Ngokukhetha i-Capel, ungaqiniseka ukuthi unozakwethu othembekile ozokweseka kuyo yonke iphrojekthi yakho futhi asize ekulolongeni ikusasa lombono wakho.

Sekukonke, amandla ka-Capel ochwepheshe bezobuchwepheshe, amakhono okukhiqiza, amanani okuncintisana, nendlela yokuhlanganyela ikwenza kube ukukhetha kokuqala kwe-PCB prototyping.Babeka phambili ukuletha imikhiqizo yekhwalithi nokuba uzakwethu obalulekile ohambweni lwakho lokusungula izinto ezintsha.

Ekuphetheni:

Inqubo yokukhetha i-imboni engcono kakhulu ku-PCB prototypingkufanele kucatshangelwe ngokucophelela.Nguukuhlola ubuchwepheshe bezobuchwepheshe, amakhono okukhiqiza, amanani entengofuthiongakhetha ngokwezifiso, ungakwazi ukunquma ifektri ukuthiihlangabezana kangcono nezidingo zephrojekthi yakho.Khumbula, isitolo se-PCB esihle kakhulu asigcini nje ngokuletha imikhiqizo emihle;yonailetha imikhiqizo emihle.Baba ozakwethu ohambweni lwakho lokusungula izinto ezintsha.Khetha ngokuhlakanipha futhi uvumele imibono yakho ilolonge ikusasa.