Video: Cov yam ntxwv hauv chav kawm dab tsi tuaj yeem kawm Examiner los pab txheeb xyuas lub tshuab luam ntawv xav tau?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov yam ntxwv ntawm chav kawm ntawm tshuab luam ntawv tau kawm los ntawm tus kws tshuaj xyuas suav nrog cov tshuab luam ntawv, hom ntawv, hom toner lossis number case siv, tshuaj lom neeg muaj pes tsawg leeg ntawm toner, thiab hom toner-rau-paper fusing txoj kev siv los tsim cov ntaub ntawv.
Yog li ntawd, cov yam ntxwv tseem ceeb dab tsi yuav tus kws tshuaj xyuas cov ntaub ntawv saib xyuas seb puas muaj qhov sib tw ntawm ob qho qauv?
Cov tus soj ntsuam saib rau tshwj xeeb zoo xws li cov tsiaj ntawv thiab lo lus sib nrug, tsab ntawv thiab lo lus slant, loj thiab proportionality ntawm ntawv, txawv txawv formations ntawm cov ntawv, vam meej, thiab lwm yam ntawm tus kheej. Kev sib piv - Cov kauj ruam tom ntej yog kom sib txawv cov ntsiab lus los ntawm cov paub qauv rau cov ntawm tus tsis paub qauv.
Ib yam li ntawd, cov tshuab luam ntawv puas tuaj yeem txheeb xyuas los ntawm cov neeg rub? Cov lej CPS no ua tau txuas ob lossis ntau dua cov ntaub ntawv luam tawm raws li tau tsim los ntawm tib yam tshuab . Ib yam li ntawd, ib txhia tshuab tau imprinting "MIC" ( kev txheeb xyuas lub tshuab code) rau hauv txhua daim ntawv purportedly rau qee nees nkaum xyoo (tseem hu ua Printer Steganography).
Ib yam li ntawd, nws tau nug, ob txoj hauv kev ntawm kev txiav txim siab sau ntawv yog dab tsi?
Indented sau ntawv yog ib txwm zoo los ntawm ib qho ntawm ob txoj kev : photographically siv oblique lub teeb, los yog los ntawm kev siv lub apparatus feem ntau hu ua ESDA, rau Electrostatic Detection Apparatus.
Dab tsi yog suav tias yog ib qho kev ntsuam xyuas rau cov ntaub ntawv nug?
Ntau QD kev xeem koom nrog kev sib piv ntawm cov nug cov ntaub ntawv , los yog cov khoom ntawm cov ntaub ntawv , mus rau cov txheej txheem paub. Feem ntau feem ntau hom ntawm kev tshuaj xyuas suav nrog kev sau ntawv uas tus kws tshuaj xyuas sim daws cov kev txhawj xeeb txog kev muaj peev xwm sau tau.
Pom zoo:
Cov lag luam feem ntau txhim kho dab tsi tuaj yeem khaws thiab txheeb xyuas cov ntaub ntawv rau lub hom phiaj ntawm kev txiav txim siab ua lag luam?
Cov lag luam feem ntau txhim kho dab tsi tuaj yeem khaws thiab txheeb xyuas cov ntaub ntawv rau lub hom phiaj ntawm kev txiav txim siab ua lag luam? kev khiav hauj lwm qhov system. Ib lub hom phiaj ntawm kev tswj cov ntaub ntawv yog muab cov lag luam nrog cov ntaub ntawv zoo uas lawv xav tau: ua kom tiav ib txoj haujlwm
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Yam twg ntawm cov tshuab luam ntawv hauv qab no yog suav tias yog lub tshuab luam ntawv cuam tshuam?
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Hauv kev nkag siab dab tsi lub tshuab luam ntawv dot matrix zoo dua li cov tshuab luam ntawv tsis cuam tshuam?
Txhua lub tshuab luam ntawv, xws li lub tshuab luam ntawv laser, lub tshuab luam ntawv ink-jet, LED nplooj ntawv tshuab luam ntawv, uas luam tawm yam tsis muaj kev tawm tsam ntawm daim ntawv, tsis zoo li lub tshuab luam ntawv dot matrix uas ntaus ntawv nrog cov pins me me. Cov tshuab luam ntawv tsis cuam tshuam yog ntsiag to dua li cov tshuab luam ntawv cuam tshuam, thiab tseem nrawm dua vim tsis muaj qhov txav ntawm lub taub hau luam ntawv