Yuav ua li cas yog lub hexadecimal tooj system

Txhua tus neeg uas sib txuas lus nrog ib tug computer los yog lwm yam pab kiag li lawm, tau ntsib mysterious 10FEF cov ntaub ntawv hom uas zoo li lub uninitiated ib co cipher. Yuav ua li cas cov lus dag qab cov cim? Nws puv tawm nws yog cia li xov tooj. Cov neeg uas siv hexadecimal numbering system.

Number tshuab

Txhua schoolboy paub, los yog tsawg kawg hnov qhov twg hais tias tag nrho cov zauv uas peb feem ntau yog siv, tsim ib tug zauv system. Qhov no lub npe nws Dais tsuas vim hais tias ntawm txawv cim nyob rau hauv nws kaum (0 9). Tej xov tooj nyob rau hauv peb li ib txwm system yuav sau siv lawv. Txawm li cas los, nws puv, nws yog yooj yim siv tsis yog ib txwm. Piv txwv li, cov kev pauv ntawm cov ntaub ntawv ntawm cov pab kiag li lawm yog ib qho yooj yim mus siv tus xov tooj system, nyob rau hauv uas muaj tsuas yog ob tug xov tooj: "0" - tsis muaj teeb liab - los yog "1" - ib lub teeb liab (voltage los yog ib yam dab tsi lwm tus). Nws yog hu ua binary. Txawm li cas los, los mus piav qhia cov txheej txheem nyob rau hauv xws li nrog nws yuav tau ua ntev ntev thiab yooj yim rau to taub rau cov ntaubntawv povthawj. Yog li ntawd, nws yog invented los ntawm ib tug hexadecimal tooj system.

Lub tswvyim ntawm cov hexadecimal system

Yog vim li cas yog cov ntaus ntawv siv yog ib qhov system uas muaj kaum sib txawv tej cim? Raws li yog lub npe hu, cov ntaub ntawv nyob rau hauv computers yog kis tau nyob rau hauv daim ntawv ntawm bytes, uas feem ntau muaj 8 khoom. Ib tug cov ntaub ntawv tsev - ib tug tshuab lo lus - comprises 2 bytes, i.e. 16 khoom. Yog li, siv kaum sib txawv cim yuav piav qhia txog cov ntaub ntawv uas yog qhov tsawg tshaj plaws particle nyob rau hauv cov kev pauv. Hexadecimal tooj system muaj xws li peb ib txwm xov tooj (lawm, ntawm 0 9) thiab cov thawj zoo li tus raws li cov tsiaj ntawv ntawm lub Latin tsiaj ntawv (A, B, C, D , E, F). Nws yog los ntawm cov cim feem ntau sau ib daim ntawv koog twg ntawm cov ntaub ntawv. Lawv muaj peev xwm ua tej yam xam hauj lwm. Hais tias yog, tsis tas li ntawd, kev rho tawm, kev nce zaus, faib. Cov tshwm sim yuav kuj yuav ib tug hexadecimal tooj.

qhov uas siv tau

Hexadecimal system yog siv los sau yuam kev lis dej num. Tej zaum lawv yuav tshwm sim nyob rau ntau yam software khoom. Piv txwv li, qhov thiaj li cim operating system uas tsis. Txhua tooj nyob rau hauv cov txuj no. Koj yuav nrhiav tau tawm yog dab tsi zoo ntawm kev ua yuam kev tshwm sim nyob rau hauv tus txheej txheem los ntawm decrypting nws siv cov lus qhia. Tsis tas li ntawd, cov cim no yeej siv thaum sau ntawv cov kev pab cuam nyob rau hauv cov lus ntawm tsawg-qib, xws li los ua ke lus. Hexadecimal tooj system yog tseem hlub los ntawm programmers, thiab vim hais tias nws Cheebtsam muaj peev xwm heev yooj yim yuav hloov dua siab tshiab rau hauv binary, uas yog "haiv neeg" mus rau tag nrho cov technology. Nrog rau cov cim kuj piav xim schemes. Nyob rau hauv tas li ntawd, nws yog kiag li tag nrho cov ntaub ntawv nyob rau hauv koj lub cev (ob phau ntawv nyeem thiab graphics, thiab txawm music los yog video) xa tom qab lub tshaj tawm hauv xov raws li ib tug series ntawm binary codes. Saib qhov nws yog qhov zoo tshaj li hexadecimal cim.

Ntawm cov hoob kawm, tej tooj yuav sau nyob rau hauv txawv tooj systems. Qhov no yog tus zauv thiab binary, thiab hexadecimal. Txhais ib lo lus los ntawm ib tug ntawm lawv mus rau lwm lub, koj yuav tsum siv xws li ib tug kev pab cuam, raws li ib tug txhais lus ntawm xov tooj systems, los yog ua nws tus kheej nrog kev pab los ntawm ib tug algorithm.