Khoom siv thiab khoom siv yog tsim nyog rau kev ua haujlwm ntawm cov computers, thiab lwm yam cuab yeej siv. Cov ntaub ntawv txhais tau tias txhua yam lus qhia los ntawm qee cov lus txib rau cov ntaub ntawv. Cov ntaub ntawv yog ncaj qha tsim los ntawm cov neeg siv lawv tus kheej, piv txwv li, koj tuaj yeem coj yees duab los yog ib co ntawv.
Rau hnub tim, nws muaj qee qhov tshwj xeeb "byte-bit", uas nws yuav ua tau los ua txhua qhov tsim nyog. Tsim cov neeg siv cov ntaub ntawv yuav raug khaws cia hauv txhua hom ntawv sib txawv, thiab hnub tim muaj ntau hom xws li, tab sis feem ntau, cov ntaub ntawv cia mus ua ib daim ntawv binary. Qee cov ntaub ntawv tsuas yog muaj hom ntu ib ntus xwb, los yog lawv siv thiab muab cia thaum lub sijhawm tsim nyog ua haujlwm. Tom qab cov haujlwm, cov ntaub ntawv no tsuas yog rho tawm hauv kev siv hom. Tshuav, byte, kbyte thiab lwm yam, ntau dua qhov tseem ceeb yog siv los khaws cov ntaub ntawv, nrog rau kev khiav haujlwm ntawm lub tshuab computer. Ntxiv thiab, bytes thiab cov khoom yuav muab kaw rau ntawm cov khoom siv tshwj xeeb rau kev khaws cia cov ntaub ntawv, xws li, koj tuaj yeem nqa RAM los sis siv kev nco.
Txhais
Ntsis yog suav tias yog qhov tsawg tshaj plaws chav tsev, lub npe los ntawm lub English npe «binary zauv», los yog es, nws yog ib tug binary tooj, hom muaj tsuas yog ib them nyiaj ntawm binary code. Koj tuaj yeem yooj yim txiav txim siab tias muaj pes tsawg tus zauv (decimal digit) yuav muab ua ib lub chaw los yog xoom, piv txwv li, koj tuaj yeem qhib lub rooj. Yog hais tias koj xav paub yuav ua li cas hloov khoom siv mus bytes, ces koj siv tau cov lus no thiab lub laij zauv, qhov tseeb, tsis muaj ib yam dab tsi nyuab rau hauv no.
Lwm qhov tseem ceeb
Tam sim no paub tseeb seb qhov kilobyte yog dab tsi, thiab txhais cov khoom rau kev bytes. Cov feem ntau lug siv muaj kilobytes system xam nyob rau hauv lub computer kos duab. Yog hais tias peb tham nyob rau hauv cov nqe lus ntawm ib tug kws, ces koj yuav muab tso rau nws li no: binary xov tooj yog siv rau lub tshwj xeeb numbering ntawm tag nrho cov uas twb muaj lawm hlwb, uas yuav mus rau cov cim xeeb. Peb sim tam sim no los soj ntsuam qhov piv txwv simplig, muaj ntau qhov chaw nyob ntawm txhua qhov chaw nyob hauv npav, tab sis txhua qhov teeb meem nws yuav zoo ib yam li ob qhov qis ntawm N. Los yog lwm tus koj tuaj yeem muab tso rau - 2N. Tsab ntawv N yuav qhia txog cov npav ntawm lub npav.
Kev sib raug zoo
Qhov tseeb, cov nqe lus nug txog kev hloov cov khoom pauv to bytes tsis yog qhov yooj yim, tiam sis tseem, yog tias koj kho qhov teeb meem no kom zoo li zoo tau, ces koj yuav zaum tau cov lus teb meej. Hauv txujci, tam sim no muaj cov chaw tshwjxeeb tshwjxeeb uas tshwjxeeb ntawm kev qhia tshwjxeeb uas tsim tshwjxeeb. Yog hais tias koj tsis tuaj yeem daws qhov teeb meem ntawm hloov cov khoom rau hauv bytes, ces koj tuaj yeem mus xyuas cov chaw tshwj xeeb no thiab tsim cov lus teb yog muaj, tab sis yog tias koj xav tau ntau qhov tseeb, ces koj tseem yuav tau ua tus txheej txheem tseem ceeb rau koj tus kheej.