I-AppleTalk Yayisistim yoNxibelelwano sokuQala kwi-Mac
Ukususela ekuqalisweni kweMac ngo-1984, i-Apple iquke inkxaso yokwakha inethiwekhi. Namhlanje, ichwethi ye-Ethernet okanye i- Wi-Fi eyakhelweyo ayikulindelekanga kuphela kodwa ingenakwenzeka. Kodwa ngowama-1984, ukuba nekhompyutheni enezakhiwo zokunxibelelanisa kwakunzima ukuguqula.
I-Apple ekuqaleni yayisebenzisa inkqubo yokunxibelelana eyayibizwa ngokuthi yi-AppleTalk, eyavumela ukuba ii-Macs zakudala zingabonisane kuphela kodwa zibaluleke ngakumbi, ukwabelana oko kwakunjalo, emva koko, iinkqubo eziphambili ze-laser printer. Laba baprinti baba yinxalenye yenguqu yokushicilela idesktophu eyayixhomekeke kwi-Macs yokuqala.
Ukuqonda ukubaluleka kwe-AppleTalk, kwaye kamva, i-EtherTalk, iifom esebenzisa i-Apple, kufuneka uphinde ubuye ubone uhlobo luni lokunxibelelanisa lwalufumaneka ngo-1984.
I-Network Like It & # 39; s 1984
Ngo-1984, ubuncinci njengoko ndikhumbule, kwakukho iinkqubo ezahlukeneyo zokunxibelelana kwenethiwekhi ezikhoyo. Phantse zonke zazinikwa njengamakhadi ezongeziweyo kwiinkqubo zekhomputha zexesha. Iimithathu ezinkulu ngelo xesha zaziyi- Ethernet , i- Token Ring , kunye ne-ARCNET. Nditsho nokuba kwakukho iinkqubo ezintathu zokunxibelelana ngokunxibelelwano. Kwakukho iinguqulelo ezahlukeneyo zethungelwano ngalunye, ngeendlela ezahlukeneyo zokunxibelelana kunye neendaba zokunxibelelana eziphathekayo ezisetyenziswayo, kwaye ziphela kuphela kwiinkqubo ezinkulu zenethiwekhi ezintathu; kukho ezinye iinkqubo ezimbalwa zokukhetha kuzo.
Ingongoma, ukugqiba kwintanethi yeenkqubo zakho zekhompyutheni kwakungeyona into encinci, kwaye emva kokuba ukhethe inethiwekhi, kwakukho umsebenzi omkhulu wokuqalisa ukulungiselela, ukulungiselela, ukuvavanya, ukuchitha, nokulawula inkqubo yenethiwekhi.
AppleBus
Ngexesha lokuphuhliswa kokuqala kwe-Mac yokuqala, i-Apple yayifuna indlela yokuvumela i-Macintosh kunye ne-Lisa ikhompyutha ukuba yabelane ngeprinta yeLaserWriter, yona yedwa, ixabisa ngokufanayo kufana ne-Macintosh ka-1984. Ngenxa yeendleko eziphezulu zalo mzila, kwacaca ukuba umthombo wokushicilela kwakufanele ukwabelwane.
Ngelo xesha, i-IBM yayisele ibonise inethiwekhi yayo ye-Token Ring kwaye yayilindele ukwenza iteknoloji itholakale ekuqaleni kuka-1983. IBM yayisemva kwexesha lokukhulula inethiwekhi yeToken Ring, iphoqa i-Apple ukuba ikhangele kwisisombululo sesistim sexesha.
I-Mac emva koko yasebenzisa i-chip controller chip ukunyamekela ii-portal zayo. Le nqubo yokulawula yecala inezakhiwo ezingavamile, eziquka ukukhawuleza ngokukhawuleza, ukuya kuma-kilobits angama-256 ngesibini, kunye nokukwazi ukuba nenethiwekhi yomgaqo-protocol eyakhelwe kwi-chip ngokwayo. Ngokudibanisa isiphaluka esongezelelweyo, i-Apple yakwazi ukushenxisa isantya ukuya kuma-kilobits angama-500 ngesibini.
Ngokusebenzisa i-Chip control controller chip, i-Apple yakwazi ukwakha inkqubo yenethiwekhi enoba nayiphi na umsebenzisi angayimisa; akukho teknoloji efunekayo. Kwakufuneka iimfuneko zokucwangcisa; unokwenene ukucoca ii-Macs kunye nemipheripherari ndawonye, kungekho mfuneko yokunika iidilesi okanye ukusetha umncedisi.
I-Apple ibize le nethiwekhi entsha ye-AppleBus, kwaye yayiquka kunye nekhompyutha yeLisa kunye ne-Macintosh ye-1984, kunye ne-adapters ezingasetyenziswa kwiikhompyutha ze-Apple II kunye ne-Apple III.
AppleTalk
Kwiinyanga zokuqala zika-1985, inkqubo ye-IBM ye-Token Ring ayengayithumanga, kwaye i-Apple yanquma ukuba inethwekhi ye-AppleBus ikwazi ukuhlangabezana neemfuno zabasebenzisi bayo ngelixa linikeza inkqubo yokusekwa kwenethwekhi kunye nolawulo lwenkqubo. Enyanisweni, nabani na onokudala inethiwekhi kunye ne-Macs, LaserWriter kunye ne-AppleBus system.
Ngokukhutshwa kwe-Macintosh Plus ngo-1985, i-Apple yaqamba kwakhona i-AppleBus kwi-AppleTalk kwaye yongezelela ukuphucuka okumbalwa. Kwakukho isivinini esikhulu esingaphantsi kwama-kilobits angama-500 ngesibini, ubude obude beenyawo ezili-1, kunye nomda wama-255 amadivayisi axhunyiwe kwi-network ye-AppleTalk.
Inkqubo yokuqala ye-AppleTalk yokucoca i-self-termination and usetyenziso lwekhefu elilula lokuqhuba i-matatu. Okubaluleke ngakumbi, nangona kunjalo, loo nto i-Apple yashiya ulwahlulo lomnatha kunye nenqanaba lesoftware lihlukile . Oku kwavunyelwa ukuba i-AppleTalk isetyenziswe kwiindidi ezimbalwa ezahlukeneyo zemidiya yomzimba, kubandakanywa iklabhu yasekuqaleni yakwa-AppleTalk efumaneka kwi-Apple, kodwa kwakhona ixabiso eliphezulu kakhulu, kunye ne-PhoneNet i-adapters, esetyenziselwa ukuqhuba ikhonkco yefowuni yomgangatho ophezulu.
Ngo-1989, i-Apple ikhuphe i-AppleTalk iSigaba sesi-II, esasusa umda we-node ye-255 yenethiwekhi yokuqala. I-Apple nayo yongezelela i-EtherTalk kunye neTokenTalk iinkqubo zenethiwekhi ezivumela ii-Mac ukuba zisebenzise inkqubo ye-Ethernet ngoku, kunye ne-IBM's Token Ring amanethiwekhi.
Ukuphela kwe-AppleTalk
I-AppleTalk yasinda kakhulu kwixesha le- OS X yama-Macs . Oku kubangelwe kwisiseko esikhulu esinezixhobo zokushicilela i-laser, kunye nezonxibelelwano ezincinci zendawo zendawo ezazidibanisa amacandelo ama-Mac ndawonye. Xa i-Apple yazisa i- OS X Snow Leopard ngowama-2009 , i-AppleTalk yachithwa ngokusemthethweni, kwaye ayisayi kubandakanywa kuyo nayiphina imveliso ye-Apple.
I-AppleTalk & # 39; s Legacy
I-AppleTalk yinkqubo entsha yenethiwekhi yexesha layo. Nangona bekungekho okukhawuleza, ngokuqinisekileyo yayiyinkqubo ye-network elula ukufaka nokulawula. Ngaphambi kokuba ezinye iinkqubo zethungelwano ziqalise ukuthengisa iimpawu ze-adapter zenethiwekhi zendlela yokucwangcisa okanye iinkqubo zokunxibelelana ngokulula, i-AppleTalk sele ifikelele ekusebenziseni kulula ukuyisebenzisa, iimeko zokumisela eziye zazama ukuzenza.