dab tsi yog magnetic nruas nco

Sib nqus nruas nco yog ib hom ntawv thaum ntxov ntawm lub computer nco uas tau siv nyob rau hauv nruab nrab -20th caug xyoo. Nws yog ib txoj hauv kev txhim khu kev qha thiab muaj txiaj ntsig ntawm kev khaws cov ntaub ntawv, thiab ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev suav niaj hnub.

Ntawm nws cov tub ntxhais, sib nqus nruas nco yog lub nruas rotating uas yog coated nrog cov khoom sib nqus. Cov ntaub ntawv khaws cia rau ntawm lub nruas nyob rau hauv daim ntawv binary, nrog rau txhua qhov me me sib haum mus rau qhov chaw sib nqus ntawm qhov chaw ntawm lub nruas. Lub nruas tig ntawm qhov ceev, cia lub computer nyeem lossis sau cov ntaub ntawv mus rau txhua qhov chaw ntawm lub nruas.

Ib qho txiaj ntsig tseem ceeb ntawm kev sib nqus nruas nco yog nws qhov ceev. Tsis zoo li cov ntaub ntawv thaum ntxov ntawm daim kab xev cia, uas yuav tsum tau siv sij hawm-siv rewinding thiab ceev-forwarding, sib nqus nruas nco tau nkag tau cov ntaub ntawv yuav luag instantly. Lwm qhov zoo dua yog nws txoj kev ntseeg siab - vim tias tsis muaj qhov txav hauv lub nruas, nws tsis tshua muaj kev ua haujlwm tsis zoo.

Thaum lub cim xeeb sib nqus nruas yog tam sim no tsis siv lawm, nws tau ua lub luag haujlwm tseem ceeb hauv kev tsim cov tshuab xam zauv. Nws tau ua txoj hauv kev rau ntau cov ntaub ntawv khaws cia zoo li hard drives thiab solid-state drives, thiab pab ua kom cov khoos phis tawj me me, nrawm dua, thiab ua haujlwm zoo dua.