Ulwazi

Ngokuthuthuka okusheshayo kwamakhompiyutha kanye nobuchwepheshe bawo bokuxhumanisa (okwaziwa nangokuthi “ubuchwepheshe benethiwekhi”), i-Ethernet isiphenduke inethiwekhi yekhompiyutha enezingqimba ezimbili enebanga eliphakeme kakhulu lokungena kuze kube manje. Ingxenye eyinhloko ye-Ethernet iswishi ye-Ethernet. Imanuwali kanye...

I-VCSEL, ebizwa ngokuthi i-Vertical Cavity Surface Emitting Laser ngokugcwele, iwuhlobo lwe-semiconductor laser. Okwamanje, ama-VCSEL amaningi asekelwe kuma-semiconductors e-GaAs, futhi ubude be-wavelength bokukhishwa ikakhulukazi bukwibhendi ye-infrared wave. Ngo-1977, uProfesa Ika Kenichi waseTokyo University of Technology ...

Inethiwekhi ingahlukaniswa nge-LAN, LAN, MAN, kanye ne-WAN. Izincazelo ezithile zala mabizo ziyachazwa futhi ziqhathaniswe ngezansi. (1) Inethiwekhi yendawo yomuntu siqu (i-PAN) Amanethiwekhi anjalo anganika amandla ukuxhumana kwenethiwekhi yebanga elifushane phakathi kwezinto ezisetshenziswayo eziphathwayo namadivayisi okuxhumana, Lokhu kuhlanganisa...

I-RSSI isifinyezo se-Received Signal Strength Indication. Isici samandla esignali esamukelwe sibalwa ngokuqhathanisa amanani amabili; okungukuthi, ingasetshenziswa ukunquma ukuthi amandla esiginali aqine noma abuthakathaka kangakanani uma eqhathaniswa nenye isignali. Ifomula yokubala ye-RSSI...

Kusukela ngo-802.11n, ubuchwepheshe be-MIMO buye basetshenziswa kule mithetho yomthetho futhi buye bathuthukisa kakhulu izinga lokudlulisela okungenantambo. Ngokuqondile, indlela yokufeza ukuthuthukiswa kobuchwepheshe obuphezulu. Manje ake sibhekisise ubuchwepheshe be-MIMO. Ngokuqhubeka kobuchwepheshe bokuxhumana obungenawaya, mor...

Kunezinhlobo eziningi zokushintshwa emakethe, kodwa futhi kukhona umehluko ohlukile wokusebenza, futhi izici eziyinhloko zihlukile. Ingahlukaniswa ngokomqondo obanzi nesikali sohlelo lokusebenza: 1) Okokuqala, ngomqondo obanzi, ukushintshwa kwenethiwekhi kungahlukaniswa ngezigaba ezimbili...