Dab tsi yog qhov tseem ceeb ntawm CPU
Central processing unit (CPU) yog ib qho ntawm cov cuab yeej tseem ceeb ntawm lub tshuab hluav taws xob thiab cov khoom siv tseem ceeb ntawm lub computer. Nws txoj haujlwm yog tsuas yog txhais cov lus qhia hauv computer thiab txheej txheem cov ntaub ntawv hauv computer software. CPU yog lub hauv paus tseem ceeb ntawm lub khoos phis tawj uas yog lub luag haujlwm rau kev nyeem cov lus qhia, txiav txim siab cov lus qhia thiab ua cov lus qhia. Lub chaw ua haujlwm hauv nruab nrab feem ntau suav nrog ob ntu: tus tswj hwm thiab cov lej lej, uas tseem suav nrog cache nco thiab cov ntaub ntawv thiab tswj lub npav kom paub txog kev sib txuas ntawm lawv. Peb lub hauv paus tseem ceeb ntawm lub khoos phis tawj hluav taws xob yog CPU, lub cim xeeb sab hauv thiab cov khoom siv nkag / tawm. Lub luag haujlwm tseem ceeb ntawm CPU yog ua cov lus qhia, ua haujlwm, tswj lub sijhawm thiab ua cov ntaub ntawv.
Lub ntsiab Cheebtsam ntawm CPU yog maub los thiab arithmetic unit; Tus maub los muaj xws li program counter, instruction register, instruction decoder, timeing generator and operation controller; Cov haujlwm tseem ceeb ntawm chav lej lej suav nrog ntxiv, rho tawm, sib faib thiab faib, thiab, lossis, tsis yog, XOR thiab lwm yam kev ua haujlwm zoo.
CPU feem ntau suav nrog ob ntu: tus tswj hwm thiab chav lej lej, uas tseem suav nrog cache nco thiab cov ntaub ntawv thiab tswj lub npav kom paub txog kev sib txuas ntawm lawv.
Cov haujlwm tseem ceeb ntawm chav lej lej suav nrog ntxiv, rho tawm, sib faib thiab faib, kev ua haujlwm zoo xws li thiab, lossis, tsis yog thiab XOR, thiab cov haujlwm xws li hloov pauv, sib piv thiab sib kis, tseem hu ua arithmetic logic unit (ALU).
Tus maub los yog tsim los ntawm cov ntawv pov thawj, kev qhia ntawv sau npe, kev qhia decoder, lub sijhawm siv lub tshuab hluav taws xob thiab lub tshuab ua haujlwm. Nws yog lub "kev txiav txim siab lub cev" los muab cov lus txib, uas yog, kev sib koom tes thiab hais kom ua haujlwm ntawm tag nrho lub computer system.
Nyob rau hauv lub computer architecture, CPU yog lub core hardware unit uas tswj thiab faib tag nrho cov hardware kev pab cuam ntawm lub computer (xws li nco, input thiab tso zis units) thiab ua hauj lwm dav. Lub hauv paus ntawm CPU thiab kev ua haujlwm yog kev tswj hwm lub computer. Kev ua haujlwm ntawm tag nrho cov txheej txheem software hauv lub khoos phis tawj yuav raug teeb tsa rau kev ua haujlwm ntawm CPU los ntawm cov txheej txheem qhia.
Nws tuaj yeem pom tias qhov tseem ceeb ntawm CPU hauv cov khoom siv hluav taws xob. Yog tias CPU tsis ua haujlwm ib txwm, nws yuav ua rau muaj qhov tshwm sim loj heev. Thaum tshav kub kub dissipation kuj ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm CPU. Feem ntau cov khoom siv hluav taws xob tsis ua haujlwm vim qhov kub thiab txias. Muaj cov cua kub zoo dissipation yog qhov tseem ceeb rau kev ruaj ntseg ntawm cov khoom siv hluav taws xob. Kev tsim thermal tsim tseem xav tau thaum tsim cov khoom siv hluav taws xob.
