Video: Lub compact disk khaws cov ntaub ntawv li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
CDs khw cov ntaub ntawv digitally, piv txwv li, nrog kev pab ntawm ntau lab tus 1s thiab 0s. Cov ntaub ntawv ntawm a CD yog encoded nrog kev pab los ntawm ib tug laser beam uas etches me me indentations (los yog pob, yog tias koj yuav) ntawm nws nto. Ib pob, in CD cov ntsiab lus, yog lub npe hu ua lub qhov, thiab sawv cev rau tus lej 0.
Ib yam li ntawd, nyob rau hauv daim ntawv twg lub compact disk khaws cov ntaub ntawv?
A Compact Disc ( CD ) yog ib optical disc siv rau khw digital cov ntaub ntawv . CD - ROMs thiab CD -Rs tseem siv cov thev naus laus zis hauv kev lag luam hauv computer. CD -ROM tsav siv ze-infrared 780nm laser diode.
Qhov thib ob, cov ntaub ntawv khaws cia hauv CD li cas? Cov ntaub ntawv yog khaws cia nyob rau hauv lub disc li 1's thiab 0's. The CD Tus nyeem ntawv ci ib lub laser rau ntawm qhov chaw ntawm lub disc, thiab lub laser yog ib qho kev xav rov qab mus rau qhov muag pom qhov muag, los ntawm nws. Thaum ib qho laser los rau hauv kev sib cuag nrog cov khoom siv, cov khoom hloov lub xeev los ntawm kev xav, toopaque / absorbing.
Kuj paub, cov ntaub ntawv nyeem los ntawm lub compact disc li cas?
Cov CD tsav ci ib lub laser ntawm qhov chaw ntawm lub CD thiab tuaj yeem txheeb xyuas qhov chaw cuam tshuam thiab cov pob los ntawm cov nyiaj laser uas lawv xav txog. Tus tsav converts thereflections rau hauv 1s thiab 0s rau nyeem digital cov ntaub ntawv los ntawm disc . A CD -R disc yuav tsum tso cai rau lub driveto sau cov ntaub ntawv mus rau ntawm disc.
Lub hom phiaj ntawm lub compact disc yog dab tsi?
A compact disc yog ib qho portable cia nruab nrab uas yuav siv tau los sau, khaws thiab ua si rov qab suab, yees duab thiab lwm yam ntaub ntawv nyob rau hauv daim ntawv digital.
Pom zoo:
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