AppleTalk shine tsarin sadarwar asali na Mac
Tun lokacin gabatarwar Mac a 1984, Apple ya haɗa da goyon bayan sadarwar da aka gina. A zamanin yau, tashar Ethernet ko Wi-Fi mai ginawa ba kawai ana sa ran ba, amma kamar yadda ya kamata. Amma a shekara ta 1984, samun komputa tare da haɗin ginin da aka gina shi ya kasance mai sauyi.
Kamfanin Apple ya fara amfani da tsarin sadarwar da ake kira AppleTalk, wanda ya ba da damar Macs na farko don sadarwa kawai tare da juna amma mafi mahimmanci, don raba abin da yake, bayan haka, tsarin tsaftace laser mai tsada sosai. Wadannan mawallafi sun zama wani ɓangare na juyin juya halin kwamfyuta wanda Macs na farko suka shiga.
Don fahimtar muhimmancin AppleTalk, da kuma daga baya, EtherTalk, tsarin da Apple ke amfani dasu, dole ne ka dawo ka ga abin da irin cibiyoyin sadarwa ke samuwa a shekarar 1984.
Network kamar shi & # 39; s 1984
A shekara ta 1984, akalla kamar yadda na tuna da shi, akwai hanyoyin sadarwa daban daban. Kusan duk an ba su kyauta a cikin tsarin kwamfyuta na lokaci. Babba uku a wancan lokacin sune Ethernet , Token Ring , da ARCNET. Har ma da cewa akwai tsarin sadarwa guda uku da aka shimfiɗa ainihin batun. Akwai nau'ukan iri daban-daban na kowace cibiyar sadarwa, tare da tallace-tallace daban-daban da kuma maƙalafan haɗin kai na amfani, kuma wannan shi ne kawai tare da manyan tsarin sadarwa na uku; akwai wasu 'yan wasu tsarin da za a zabi daga.
Ma'anar kasancewa, yanke shawara a kan hanyar sadarwar don kwamfutarka ba aikin banza ba ne, kuma da zarar ka zaɓi cibiyar sadarwa, akwai aiki mai yawa da za a gudanar don kafa, saita, gwajin, tsarawa, da kuma gudanar da tsarin sadarwa.
AppleBus
A lokacin da aka fara inganta Mac ɗin farko, Apple yana neman hanyoyin da zai ba da damar Macintosh da Lisa kwakwalwa don raba laser LaserWriter, wanda shi kansa, farashin kusa da shi a matsayin Macintosh na 1984. Saboda girman farashin wannan gefen, yana da mahimmanci cewa dole ne a raba abin da ake buƙatar.
A lokacin, IBM ya riga ya nuna cibiyar sadarwa ta Token Ring kuma yana sa ran yin fasaha ta farkon farkon shekarar 1983. IBM ya jinkirta saki cibiyar sadarwa na Token Ring, ya tilasta Apple ya duba hanyar sadarwa na zamani.
Mac ɗin nan a baya ya yi amfani da guntu mai kulawa da sakonni don kula da tashar jiragen ruwa. Wannan guntu mai sarrafawa yana da wasu kyawawan kaddarorin, ciki har da gudu da sauri, har zuwa 256 kilobits da biyu, da kuma damar yin amfani da tashar hanyar sadarwa ta hanyar sadarwa ta cikin kanta. Ta ƙara wani ƙarin ƙarin kewaye, Apple ya iya tura gudun zuwa kusan 500 kilobits ta biyu.
Ta amfani da wannan guntu mai sarrafawa, Apple ya iya gina tsarin hanyar sadarwa wanda kowane mai amfani zai iya kafa; babu fasahar fasahar da ake bukata. Ya ba da buƙatun tsarin sanyi; za ku iya zazzage kawai Macs da haɗin kai tare, ba tare da buƙatar sanya adiresoshin ko kafa uwar garke ba.
Apple ya kira wannan sabuwar cibiyar kamfanin AppleBus, kuma ya haɗa shi da kwamfutar Lisa da kuma Macintosh na 1984, har ma ya miƙa masu adawa waɗanda za a iya amfani dashi a cikin Apple II da Apple III kwakwalwa.
AppleTalk
A cikin farkon watanni 1985, tsarin IBM na Token Ring bai riga ya aika ba, kuma Apple ya yanke shawarar cewa kamfanin AppleBus zai iya saduwa da bukatun masu amfani da shi yayin bada saitin cibiyar sadarwa da tsarin gudanarwa. A gaskiya, kowa zai iya ƙirƙirar cibiyar sadarwa tare da wasu Macs, LaserWriter, da tsarin AppleBus.
Tare da sakin Macintosh Plus a 1985, Apple ya sake suna AppleBus zuwa AppleTalk kuma ya kara daɗaɗɗa kaɗan. Ya sami gudunmawar tazarar kusan 500 kilobits ta biyu, iyakar nisa kusan 1,000 feet, kuma iyaka na na'urorin 255 da aka haɗa da cibiyar sadarwa AppleTalk.
Tsarin tsarin AppleTalk na asali ya ƙare kansa kuma an yi amfani da shi ta sauƙi mai sauƙi. Abu mafi mahimmanci, duk da haka, Apple ya bar kwakwalwar jiki na cibiyar sadarwar kuma matakan software ya bambanta . Wannan ya ba da damar amfani da AppleTalk a kan wasu nau'ikan kafofin watsa labaru na zamani, ciki har da AppleTalk na asali daga Apple, amma har da mafi tsada, kuma mafi sauƙin samuwa, masu adaftar waya, wanda yayi amfani da fasahar wayar tarho hudu.
A shekarar 1989, Apple ya fitar da AppleTalk Phase II, wanda ya cire iyakar iyakokin cibiyar sadarwa na 255 na asali. Apple kuma ya kara da tsarin EtherTalk da TokenTalk wanda ya ba Macs damar amfani da tsarin Ethernet yanzu, da kuma hanyoyin sadarwa ta IBM na Token Ring.
Ƙarshen AppleTalk
AppleTalk ya rayu sosai a cikin OS X zamanin Macs . Wannan shi ne saboda babban shigarwar lasisin laser, da kananan ƙananan yankunan da suka haɗa maballin Macs tare. Lokacin da Apple ya gabatar da OS X Snow Leopard a 2009 , AppleTalk aka watsi da shi, kuma ba a haɗa shi a cikin wani samfurin Apple ba.
AppleTalk & # 39; s Legacy
AppleTalk wani tsarin hanyar sadarwa ne na zamani. Duk da cewa ba shine mafi sauri ba, lalle ne shi ne mafi sauki tsarin sadarwa don shigar da sarrafa. Kafin sauran sassan cibiyar sadarwa sun fara samarda ra'ayin sababbin hanyar sadarwar cibiyar sadarwa ko tsarin sarrafawa mai sauƙi-sarrafawa, AppleTalk ya dade yana da sauƙin amfani, matsayi na zane-zane wanda wasu yanzu sun yi ƙoƙari suyi koyi.