Video: Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv sib sau ua ke thiab cov ntaub ntawv tsis sib xws?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Rau aggregate cov ntaub ntawv yog sau thiab sau cov ntaub ntawv ; rau disaggregate cov ntaub ntawv yog kom tawg aggregated cov ntaub ntawv mus rau hauv cov khoom seem los yog me me units ntawm cov ntaub ntawv.
Tsis tas li lo lus nug yog, dab tsi yog kev sib cais thiab kev sib sau ntawm cov ntaub ntawv?
Kev sib sau ua ke hais txog kev ua haujlwm uas qhov tseem ceeb ntawm daim duab qhov tseem ceeb ntawm cov ncauj lus nthuav dav tau txiav txim siab ntawm lub sijhawm ua haujlwm thiab qhia lossis npaj rau sib sau ua ke qib. Disaggregation yog hais txog kev ua haujlwm uas cia li muab cov ntsiab lus ntawm tus nqi tseem ceeb los ntawm kev sib sau ua ke ntawm theem nthuav dav.
Tsis tas li ntawd, qhov twg yog qhov piv txwv ntawm cov ntaub ntawv sau ua ke? Cov ntaub ntawv sib sau yog li lub npe hais tias, cov ntaub ntawv tsuas muaj nyob rau hauv tag nrho daim ntawv. Hom piv txwv yog: Cov kev tawm mus rau txhua lub canton hauv tsoomfwv kev xaiv tsa: suav ( sib sau ua ke los ntawm ib tus neeg pov npav) piv rau tag nrho cov pej xeem muaj cai pov npav.
Kuj kom paub yog, nws txhais li cas los sau cov ntaub ntawv?
Cov ntaub ntawv sib sau yog hais txog tus lej lossis cov ntaub ntawv tsis yog tus lej uas yog (1) sau los ntawm ntau qhov chaw thiab/lossis ntawm ntau yam kev ntsuas, hloov pauv, lossis tus neeg thiab (2) muab tso ua ke rau hauv cov ntaub ntawv Cov ntsiab lus los yog cov lus qhia luv luv, feem ntau yog rau lub hom phiaj ntawm kev tshaj tawm pej xeem lossis kev txheeb xyuas txheeb cais-i.e., tshuaj xyuas cov ncauj lus, Dab tsi yog cov ntaub ntawv tsis sib sau ua ke?
Tsis yog - Cov ntaub ntawv sib sau . Cov platforms no "tsis qhia npe" tus neeg ua liaj ua teb cov ntaub ntawv los ntawm kev tshem tawm cov ntaub ntawv qhia txog tus kheej. Muaj ntau txoj hauv kev los ua qhov no, tab sis lub ntsiab lus ntawm kev tsis qhia npe cov ntaub ntawv yog tias nws tsis tuaj yeem taug qab rov qab mus rau tus neeg ua liaj ua teb uas upload lub cov ntaub ntawv , yog saib los ntawm lwm tus neeg ua liaj ua teb.
Pom zoo:
Dab tsi yog qhov txawv ntawm XML cov ntaub ntawv thiab cov ntaub ntawv sib txheeb?
Qhov sib txawv loj ntawm XML cov ntaub ntawv thiab cov ntaub ntawv sib txheeb Ib daim ntawv XML muaj cov ntaub ntawv hais txog kev sib raug zoo ntawm cov ntaub ntawv rau ib leeg nyob rau hauv daim ntawv ntawm hierarchy. Nrog rau tus qauv kev sib raug zoo, tib hom kev sib raug zoo uas tuaj yeem txhais tau yog cov lus niam txiv thiab cov rooj sib raug zoo
Dab tsi yog qhov sib txawv ntawm pab pawg cov ntaub ntawv thiab cov ntaub ntawv tsis yog pawg?
Ob leeg yog cov ntaub ntawv muaj txiaj ntsig ntawm cov ntaub ntawv tab sis qhov sib txawv ntawm lawv yog cov ntaub ntawv tsis muaj ntaub ntawv yog rawdata. Qhov no txhais tau hais tias nws nyuam qhuav tau sau tab sis tsis txheeb rau hauv ib pawg lossis cov chav kawm. Ntawm qhov tod tes, groupeddata yog cov ntaub ntawv uas tau teeb tsa ua pawg los ntawm cov ntaub ntawv nyoos
Dab tsi yog qhov txawv ntawm cov ntaub ntawv hom thiab qhov sib txawv?
Ib qho kev sib txawv yuav tsum muaj cov ntaub ntawv sib txuas nrog nws, piv txwv li nws tuaj yeem muaj cov ntaub ntawv xws li cov lej, lej lej, cov cim thiab lwm yam. Qhov sib txawv ntawm hom Integer khaws cov lej suav thiab tus cim typevariable khaws cov cim tus nqi. Thawj qhov sib txawv ntawm ntau hom ntaub ntawv yog lawv qhov loj me me
Dab tsi yog qhov zoo sib xws thiab qhov txawv ntawm relays thiab PLC yog dab tsi?
Relays yog electro-mechanical keyboards uas muaj coil thiab ob hom kev sib cuag uas tsis yog NO & NC. Tab sis Programmable Logic Controller, PLC yog lub khoos phis tawj me uas tuaj yeem txiav txim siab raws li qhov kev zov me nyuam thiab nws cov tswv yim & tso tawm
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev sib txuas lus tsis sib xws thiab kev sib txuas lus taw qhia?
1. Hauv kev sib txuas lus tsis muaj kev sib txuas lus tsis tas yuav tsim kev sib txuas ntawm qhov chaw (sender) thiab qhov chaw (receiver). Tab sis nyob rau hauv kev sib txuas-taw qhia kev sib txuas lus kev sib txuas lus yuav tsum tau tsim ua ntej hloov cov ntaub ntawv