RAM - dab tsi nws yog ib thiab yuav ua li cas nws ua hauj lwm?

Los ntawm kev yuav khoom ib lub computer tshiab, yeej ib txwm mloog nws tus yam ntxwv, nws yog nws lub ntsej muag thiab lub ntsiab zoo. Ntawm cov ntau tsis yuav tsum tau mus ntsib tus yuav txo tau ntawm peb cov tsiaj ntawv - RAM. Yuav ua li cas yog nws thiab yog vim li cas koj yuav tsum? Yuav ua li cas yog pom nyiaj uas yuav tsum tau rau qub lag luam ntawm lub PC? Hais txog tag nrho cov no tom qab.

Lus Txhais thiab zog

RAM - Random Access nco rau khaws cia cov ntaub ntawv thaum lub computer. Hais tias yog, tag nrho khiav dab thiab paub tab nyob rau hauv koj lub PC nyob rau hauv qhov chaw no yog muab cia rau hauv real-time, qhov twg tom qab tiav los ntawm cov processor. Koj tseem yuav nrhiav tau ib tug thib ob lub npe ntawm no ntaus ntawv - RAM, hais tias cov lus Askiv stands rau random nkag nco, los yog "lub cim xeeb nrog ib tug arbitrary davhlau ya nyob twg." RAM muaj ib tug xov tooj ntawm ib qho tseem ceeb paub tab, tsis muaj uas tag nrho system tsuas yog tsis yooj yim sua:

1. Cia ua ib pawg suav hais tias yog ua los ntawm cov processor.
2. Cia commands thiab tej yam uas tom qab xa mus rau lub CPU rau ua thiab playback. Cov ntaub ntawv yuav kis tau tsis tsuas ncaj qha mus rau lub processor, tab sis kuj nyob rau hauv nws cov cache nco, uas yog sai npaum li cas tshaj RAM nco.
3. Sau ntawv thiab nyeem ntawv tus txheem ntawm lub cell

Nta ntawm hauj lwm

RAM yog tau cia ntaub ntawv tsuas yog thaum lub PC. Rau lub hom phiaj no nws yog tsim nyog los khaws tag nrho cov ntaub ntawv, uas koj yog ua hauj lwm rau koj tsav nyuaj. RAM - Yuav ua li cas yog nws? Nyob rau hauv lwm yam lus, qhov no cia ntaus ntawv, los ntawm kev uas cov kev ua ub ntawm tag nrho cov dab thiab cov kev pab cuam. Nws kis tau los ntawm cov RAM teem dynamic ntaub ntawv ntws. Random-mus saib nco (RAM) - dab tsi yog nws thiab dab tsi yog meant los ntawm no? Qhov no technology tso cai rau koj mus nyeem thiab sau ntawv rau tej cim xeeb nyob rau qhov twg lub sij hawm muab.

Yuav ua li cas nws ua hauj lwm?

Yuav ua li cas puas RAM? Yuav ua li cas yog nws, koj paub. Thiab yuav ua li cas yog nws ua hauj lwm? Kiag li tej cim xeeb muaj hlwb, ib tug ntawm lawv nws muaj nws tus kheej qhov chaw nyob. Txawm tias nws tag nrho, lawv muaj vaj huam sib luag naj npawb ntawm cov khoom sib npaug nyob rau hauv xov tooj mus rau 8 (8 khoom = 1 byte). Qhov no yog qhov tsawg kawg nkaus unit ntawm tej ntaub ntawv. Tag nrho cov chaw nyob yog ntawm daim ntawv no ntawm binary xov tooj (0 thiab 1) nws tus kheej raws li zoo raws li cov ntaub ntawv. Lub hlwb nyob rau hauv lub zej zog, txais qub txeeg qub sib law liag chaw nyob. Muaj ntau ntawm cov commands yog nqa tawm siv lub "Lo lus", lub cim xeeb chaw, muaj raws ntawm 4 los yog 8 bytes.

hom ntau haiv

General kev faib cais lub ntaus ntawv nyob rau hauv ob hom kev nco: SRAM (zoo li qub) thiab DRAM (dynamic). Tus thawj yog siv raws li ib tug cache cim xeeb ntawm cov CPU plays lub luag hauj lwm ntawm lub thib ob computer nco. Tej comprises SRAM yam uas yuav ua tau nyob rau hauv ob lub xeev: "on" thiab "off". Lawv muaj xws li ib tug complex txheej txheem ntawm lub tsev ib hauj saw, nyob rau hauv view ntawm cov uas coj mus ntau qhov chaw. Tus nqi ntawm cov ntaus ntawv yuav tsum tau ho siab tshaj DRAM, nyob rau hauv uas muaj cov tsis muaj chiv, vim hais tias cov neeg uas lub RAM yog tau ib tug compact tab sis muaj ib tug transistor thiab ib tug capacitor (e.g. - RAM DDR2). Lub zoo npaum li cas ntawm nws active lub sij hawm ntawm qhov kev txiav txim ntawm 4 GB, yog hais tias tus computer platform yog npaj rau kev ua si, ces pom zoo kom ua rau kom tus xovtooj no los ntawm 2 lub sij hawm. Niaj hnub no peb to taub tias cov RAM - dab tsi nws yog ib thiab yuav ua li cas nws ua hauj lwm. Tam sim no tus nyeem ntawv yog qhov yooj yim hauv paus ntsiab lus ntawm cov lag luam ntawm no ntaus ntawv.