Cov txheej txheem:
Video: Qhov yuam kev 1 txhais li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib yam yuam kev muaj txhais tau tias txhua yam uas tus programmer xav tau. Feem ntau cov programmers pom zoo tias ib qho yuam kev 0 txhais tau tias cov lus txib ua tiav tiav, thiab ib qho yuam kev 1 los yog siab dua feem ntau spellstrouble.
Kuj paub, Errorlevel yog dab tsi?
Hauv Microsoft Windows thiab MS-DOS, ib yuam kev yog tus lej lej rov qab los ntawm tus txheej txheem menyuam yaus thaum nws xaus. Qhov yuam kev yog 0 yog tias cov txheej txheem ua tiav. Qhov yuam kev yog 1 lossis ntau dua yog tias tus txheej txheem ntsib qhov yuam kev.
Ib sab saum toj no, tawm B txhais li cas? Tawm / B n. Siv Tawm / B yuav tsum tsis txhob tua cov ntaub ntawv batch lossis subroutine thiab rov qab mus rau cov lus txib processor lossis hu rau batch file orcode tam sim ntawd. Los piav qhia, ib tus tuaj yeem siv tau Tawm / B 0 zoo ib yam li GOTO:EOF rau tawm (los yog ntau dua, rov qab) los ntawm ntu hu ua code hauv ascript.
Hauv qhov no, kev siv @echo tawm yog dab tsi?
Los ntawm lub neej ntawd, cov ntaub ntawv batch yuav tso tawm nws cov lus txib raws li itruns. Lub hom phiaj ntawm thawj cov lus txib uas @ echo tawm yog tig tawm no tso saib. Cov lus txib " echo tawm "rov tawm cov zaub rau tag nrho tsab ntawv, tsuas yog rau " echo tawm " command nws tus kheej.
Dab tsi yog echo tawm hauv cov lus txib?
ECHO-ON/ECHO-OFF Command
- ECHO-ON thiab ECHO-OFF cov lus txib yog siv los pab thiab tsis siv lub suab nrov, lossis tso tawm ntawm qhov screen, ntawm cov cim nkag ntawm cov keyboard.
- ECHO-OFF hais kom ua suppresses echoing rau lub terminalattached rau ib tug txheej txheem.
- Cov piv txwv hauv qab no disables echoing rau tus neeg siv uas nws tus lej txheej txheem yog 21:
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
Koj txhais li cas los ntawm tus yuam sij ntiag tug thiab pej xeem tus yuam sij cryptography?
Nyob rau hauv pej xeem tus yuam sij cryptography, ob tus yuam sij yog siv, ib tug yuam sij yog siv rau encryption thiab thaum lwm yam yog siv rau decryption. 3. Nyob rau hauv private keycryptography, tus yuam sij yog khaws cia tsis pub leejtwg paub. Nyob rau hauv pej xeem tus yuam sij cryptography, ib qho ntawm ob tus yuam sij yog khaws cia tsis pub leejtwg paub
Vim li cas kev cob qhia yuam kev tsawg dua qhov kev xeem yuam kev?
Kev cob qhia yuam kev feem ntau yuav tsawg dua qhov kev xeem yuam kev vim tias tib cov ntaub ntawv siv los ua kom haum tus qauv yog ua haujlwm los ntsuas nws qhov kev kawm yuam kev. Ib feem ntawm qhov tsis sib xws ntawm qhov kev cob qhia yuam kev thiab qhov kev xeem yuam kev yog vim tias cov txheej txheem kev cob qhia thiab cov ntawv xeem muaj qhov sib txawv ntawm cov khoom siv
Leej twg tsim qhov yuam kev ntawm qhov yuam kev?
Lub sij hawm tseem ceeb ntawm qhov yuam kev raug tsim nyob rau xyoo 1977 los ntawm tus kws kho mob hlwb Lee Ross. Txawm li cas los xij, kev tshawb fawb txog qhov yuam kev tseem ceeb rov qab mus rau xyoo 1950 thaum cov kws paub txog kev puas siab puas ntsws Fritz Heider thiab Gustav Ichheiser pib tshawb xyuas cov neeg nkag siab txog qhov ua rau tib neeg tus cwj pwm
Vim li cas qhov kev sim thiab qhov yuam kev yog qhov zoo?
Kev sim thiab kev ua yuam kev feem ntau yog qhov zoo rau cov teb uas qhov kev daws teeb meem yog qhov tseem ceeb tshaj plaws. Lwm qhov zoo ntawm txoj kev sim thiab qhov yuam kev yog tias nws tsis sim siv qhov kev daws teeb meem raws li kev daws teeb meem ntau dua ib qho teeb meem. Kev sim thiab qhov yuam kev feem ntau yog siv los nrhiav ib qho kev daws teeb meem rau ib qho teeb meem