Ekuqaleni kobuchwepheshe bekhompyutha, enye yezinkinga ezinkulu zomsebenzisi kwakuwukungalingani kahle kwamadivaysi - amatheku amaningi amakhulu ayephethe ukuxhumanisa namaphethelo, iningi lawo elalithembekile futhi linokwethenjwa okuphansi. Isixazululo kwakuyibhasi "eyaziwa nge-serial ibhasi" noma, ngamafuphi, i-USB. Ngokokuqala ngqa, itheku entsha yathunyelwa emphakathini jikelele emuva ngo-1996. Ngo-2001, ama-motherboards kanye namadivayisi we-USB 2.0 angaphandle atholakala kumakhasimende, kwathi ngo-2010 i-USB 3.0 yavela. Manje imuphi umehluko okhona phakathi kwale mikhakha futhi kungani zombili zisafuneka?
Umehluko phakathi kwe-USB 2.0 no-3.0
Okokuqala, kubalulekile ukuthi uqaphele ukuthi wonke amachweba we-USB ayahambelana. Lokhu kusho ukuthi ukuxhuma idivaysi ethambile kancane ethekwini elisheshayo kanye okuphambene nalokho kungenzeka, kodwa isilinganiso sokushintshaniswa kwedatha sizoba sincane.
"Ungakhomba" izinga lesixhumi ngokubonakalayo - nge-USB 2.0 ingaphakathi lipendwe mhlophe, kanti nge-USB 3.0 - luhlaza okwesibhakabhaka.
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Ngaphezu kwalokho, izintambo ezintsha azihlanganisi ezine, kodwa sezintambo eziyisishiyagalombili, ezizenza zikhulu futhi zingashintshi. Ngakolunye uhlangothi, lokhu kukhulisa ukusebenza kwamadivayisi, kuthuthukisa amapharamitha okudluliswa kwedatha, ngakolunye uhlangothi, kukhulisa izindleko zekhebula. Njengomthetho, izintambo ze-USB 2.0 zinezikhathi ezi-1.5-2 ubude kunezihlobo zabo "ezisheshayo". Kunokwehluka ngosayizi nokuhlelwa kwezinguqulo ezifanayo zezixhumi. Ngakho-ke, i-USB 2.0 ihlukaniswe yaba:
- thayipha u-A (okwejwayelekile) - 4 × 12 mm;
- thayipha B (okujwayelekile) - 7 × 8 mm;
- thayipha u-A (Mini) - 3 × 7 mm, ama-trapezoidal anezinhlangothi eziyindilinga;
- thayipha B (Mini) - 3 × 7 mm, trapezoidal ngama-engeli angakwesokudla;
- thayipha u-A (Micro) - 2 × 7 mm, unxande;
- thayipha B (Micro) - 2 × 7 mm, unxantathu ngamakhona ayindilinga.
Kumaphethelo ekhompyuter, uhlobo lwe-USB A olujwayelekile lusetshenziswa kakhulu, kumagajethi eselula - Uhlobo B Mini ne-Micro. Ukuhlukaniswa kwe-USB 3.0 nakho kuyinkimbinkimbi:
- thayipha u-A (okwejwayelekile) - 4 × 12 mm;
- thayipha B (okujwayelekile) - 7 × 10 mm, ukwakheka okuyinkimbinkimbi;
- thayipha B (Mini) - 3 × 7 mm, trapezoidal ngama-engeli angakwesokudla;
- thayipha B (Micro) - 2 × 12 mm, wamaqhuqhuva ngamakhona ayindilinga kanye nokuphumula;
- thayipha C - 2,5 × 8 mm, unxande ngamakhona ayindilinga.
Uhlobo A luqhubeka lukhona kumakhompiyutha, kepha Uhlobo C luqala ukuthandwa nsuku zonke. I-adaptha yalezi zilinganiso iboniswa kusibalo.
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Ithebula: Ulwazi oluyisisekelo ngamakhono wesibili we-Second and Third Generation Port
| Isikhombi | I-USB 2.0 | I-USB 3.0 |
| Isilinganiso sedatha ephezulu | 480 Mbps | 5 Gbps |
| Inani Langempela Ledatha | kufika ku-280 Mbps | kufinyelela ku-4.5 Gbps |
| Ubukhulu bamanje | 500 mA | 900 mA |
| Izinhlobo ezijwayelekile zeWindows | ME, 2000, XP, Vista, 7, 8, 8.1, 10 | Vista, 7, 8, 8.1, 10 |
Kusekuseni kakhulu ukubhala i-USB 2.0 kuma-akhawunti - le ndlela isetshenziswa kabanzi ukuxhuma amakhibhodi, amagundane, amaphrinta, izikena namanye amadivaysi angaphandle, futhi isetshenziswa kumagajethi eselula. Kepha okokushayela ngama-flash Drives kanye nokushayela kwangaphandle, lapho ijubane lokufunda nokubhala lisemqoka, i-USB 3.0 ingcono. Iphinde ikuvumela ukuthi uxhume amadivayisi amaningi kuhabhu elilodwa nokushaja amabhethri ngokushesha ngenxa yamandla amakhulu wamanje.
