Izindaba

I-Diode yakhiwe ukuhlangana kwe-PN, futhi i-photodiode ingakwazi ukuguqula isignali ye-optical ibe isignali kagesi, njengoba kuboniswe ngezansi: Ngokuvamile, i-covalent bond i-ionized lapho i-PN junction ikhanyiswa ngokukhanya. Lokhu kudala izimbobo kanye namapheya e-electron. I-photocurrent yenziwe ngenxa ...

I-LAN ithandwa kakhulu esiyisebenzisayo namuhla. Yini i-LAN? I-Local Area Network (LAN) ibhekisela eqenjini lamakhompyutha axhunywe amakhompyutha amaningi endaweni ethile asebenzisa isiteshi sokusakaza. Uma kuningi kule ndawo, kulapho amadivaysi amaningi akwazi ukuxhumana. Futhi kuphela ...

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...