Nkhani

1. Zogawidwa ndi ntchito zoyankhulirana Malingana ndi mitundu yosiyanasiyana ya mautumiki oyankhulana, njira zoyankhulirana zikhoza kugawidwa m'machitidwe olankhulana ndi telegraph, njira zoyankhulirana ndi telefoni, njira zoyankhulirana za data, machitidwe oyankhulana ndi zithunzi, ndi zina zotero.

(1) Gwero zokhotakhota ndi decoding Ntchito ziwiri zofunika: imodzi ndikuwongolera magwiridwe antchito a kufalitsa chidziwitso, ndiko kuti, kudzera muukadaulo wina waukadaulo wokhotakhota kuyesa kuchepetsa kuchuluka kwa zizindikiro kuti muchepetse kuchuluka kwa chizindikiro. Chachiwiri ndikumaliza analog/digital (A/D) con...

Zonse ziwiri za chizindikiro ndi phokoso mukulankhulana zitha kuonedwa ngati njira zachisawawa zomwe zimasintha ndi nthawi. Njira yachisawawa imakhala ndi mawonekedwe osinthika mwachisawawa komanso magwiridwe antchito a nthawi, omwe amatha kufotokozedwa kuchokera kumitundu iwiri yosiyana koma yogwirizana kwambiri: (1) Njira yachisawawa i...

Njira yolankhulirana imatanthawuza njira yogwirira ntchito kapena njira yotumizira zizindikiro pakati pa magulu awiri olankhulana. 1. Kuyankhulana kwa Simplex, half-duplex, ndi full-duplex Kwa kulankhulana molunjika, molingana ndi malangizo ndi nthawi yotumizira uthenga, ...

Mu njira yolumikizirana ya digito, zomwe wolandila amalandira ndi kuchuluka kwa siginecha yotumizidwa ndi phokoso lanjira. Kulandila koyenera kwa ma siginecha a digito kumatengera kuthekera kocheperako ngati mulingo "wabwino". Zolakwa zomwe zafotokozedwa mumutuwu ndi ...

Chithunzi 6-6 ndi chojambula chamtundu wa digito baseband transmission system. Amapangidwa makamaka ndi fyuluta yotumizira (jenereta yamakina), njira, kulandira fyuluta ndi kusankha zitsanzo. Pofuna kuonetsetsa kuti dongosololi likugwira ntchito yodalirika komanso yadongosolo, ...