Video: Qhov kev thov USSD yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
USSD (Unstructured Supplementary Service Data) isa Global System for Mobile (GSM) kev sib txuas lus thev naus laus zis uas siv los xa cov ntawv ntawm lub xov tooj ntawm tes thiab ib qho daim ntawv thov program hauv network. Cov ntawv thov tuaj yeem suav nrog them ua ntej roaming lossis sib tham hauv xov tooj.
Ib yam li ntawd, lub ntsiab lus ntawm USSD code yog dab tsi?
Unstructured Supplementary Service Data ( USSD ), qee zaum hu ua "Quick Cov lej "los yog "Feature cov lej ", yog kev sib txuas lus raws tu qauv siv los ntawm GSM cellulartelephones los sib txuas lus nrog cov neeg siv xov tooj ntawm tes hauv computer.
Kuj Paub, Kuv yuav siv USSD li cas? USSD yog lub tshuab thev naus laus zis los ntawm cov ntaub ntawv tuaj yeem xa mus los ntawm GSM network ntawm lub xov tooj hauv paus. Qhov kev pabcuam no yuav muaj nyob hauv txhua lub xov tooj ntawm tes nrog SMSfacility. Rau siv USSD mobile banking, cov neeg siv yuav tau yooj yim hu * 99 # thiab siv cov ntawv qhia zaub mov sib tham sib.
Ib sab saum toj no, Ussd puas siv cov ntaub ntawv?
USSD (Unstructured Supplementary Service Cov ntaub ntawv ) yog ib txoj cai siv los ntawm GSM xov tooj ntawm tes sib txuas lus nrog lawv cov chaw muab kev pabcuam lub khoos phis tawj ntawm cov ntawv xov xwm. Peb feem ntau siv nws mus xyuas mobile airtime thiab cov ntaub ntawv Cov lus nug sib npaug, lossis kom tau txais ib lo lus zais ib zaug lossis PIN code, ntawm ntau daim ntawv thov.
Ussd them nyiaj ua haujlwm li cas?
Them ntawm USSD . Cov Them viav USSD channel tso cai rau koj cov neeg siv khoom them koj hu a USSD code ntawm lawv lub xov tooj ntawm tes. Cov cai no feem ntau yog nyob rau hauv daim ntawv ntawm * ua raws li qee qhov chaws thiab xaus nrog #. Tus neeg siv tau txais kev lees paub qhov kev hloov pauv nrog tus PIN thiab tom qab ntawd nws tau lees paub.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Qhov txawv ntawm qhov kev thov thiab kev thov yog dab tsi?
Raws li lub npe qhov txawv ntawm qhov kev thov andrequests yog qhov kev thov yog ua ntawm (l) whilerequests yog
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
BFS sawv rau Breadth First Search. DFS sawv cev rau Kev Tshawb Nrhiav Qhov tob. 2. BFS (Breadth First Search) siv Queue cov qauv ntaub ntawv los nrhiav txoj hauv kev luv tshaj. BFS tuaj yeem siv los nrhiav ib qhov chaw luv tshaj plaws hauv cov duab tsis hnyav, vim tias hauv BFS, peb mus txog qhov kawg uas muaj qhov tsawg kawg nkaus ntawm cov npoo los ntawm qhov chaw vertex
Tus neeg thov kev thov yog dab tsi?
Ib daim ntawv thov tus thov kev pab yog ib daim ntawv thov nyob ib leeg uas khiav ntawm lub tshuab neeg siv khoom thiab tau teeb tsa ua haujlwm raws li J2EE tivthaiv. Tus neeg thov kev thov yog siv los ua cov haujlwm, xws li kev tswj hwm lossis kev tswj hwm
Dab tsi yog qhov txawv ntawm kev thov synchronous thiab asynchronous thov?
Synchronous: Ib qho kev thov synchronous thaiv tus neeg siv khoom kom txog thaum ua haujlwm tiav. Asynchronous Ib qho kev thov asynchronous tsis thaiv tus neeg siv khoom xws li browser teb. Lub sijhawm ntawd, tus neeg siv tuaj yeem ua lwm yam haujlwm. Hauv qhov xwm txheej zoo li no, javascript cav ntawm browser tsis raug thaiv