Video: Dab tsi yog qhov txawv ntawm RTOS thiab FreeRTOS?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
FreeRTOS yog ib chav kawm ntawm RTOS uas yog tsim los me me kom khiav ntawm microcontroller - txawm hais tias nws siv tsis txwv rau cov ntawv thov microcontroller. FreeRTOS yog li muab lub sijhawm tseem ceeb ntawm lub sijhawm teem sijhawm ua haujlwm, kev sib txuas lus ua haujlwm, sijhawm thiab synchronization primitives nkaus xwb.
Ib yam li ntawd, qhov sib txawv tseem ceeb ntawm Linux thiab FreeRTOS yog dab tsi?
Ib Qhov sib txawv loj ntawm FreeRTOS thiab RTLinux yog lawv qhov ntau thiab tsawg. FreeRTOS khiav ntawm AVR muaj hneev taw (tus nqi ROM siv) ntawm kwv yees li 4.4 kilobytes. [4] RTLinux ntawm qhov tod tes yog qhov scalable. Cov Linux kernel tuaj yeem raug tshem tawm ntawm kev ua haujlwm uas koj tsis xav tau.
Tom qab, lo lus nug yog, yog FreeRTOS nyuaj lub sijhawm? FreeRTOS yog a tiag - sij hawm operating system kernel rau embedded li uas tau ported rau 35 microcontroller platforms. Nws raug faib raws li MIT License.
Kuj kom paub, txhais li cas los ntawm RTOS?
A real-time operating system ( RTOS ) yog lub operating system (OS) npaj los ua haujlwm rau cov ntawv thov hauv lub sijhawm uas ua cov ntaub ntawv raws li nws los, feem ntau yam tsis muaj kev ncua sijhawm. Cov sijhawm ua haujlwm yuav tsum tau ua (xws li OS ncua sijhawm) yog ntsuas hauv kaum ntawm vib nas this lossis luv luv ntxiv ntawm lub sijhawm.
Vim li cas peb thiaj siv RTOS?
Multitasking, ib leeg, yog vim li cas txaus siv ib RTOS hauv ntau lub tshuab. Nws tso cai rau koj los rhuav tshem cov teeb meem nyuaj rau hauv cov ntawv yooj yim thiab tsom mus rau kev txhim kho ntawm txhua txoj haujlwm es tsis yog teem caij thaum txhua yam khiav. Nws kuj ua rau nws yooj yim dua rau kev faib ua haujlwm ntawm cov tswv cuab ntawm pab pawg. Tus teem sijhawm ua tus so.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv hauv zos thiab thoob ntiaj teb hauv SQL Server?
Qhov sib txawv hauv zos tau tshaj tawm hauv ib qho kev ua haujlwm whereas Ntiaj teb hloov pauv tau tshaj tawm sab nraum lub luag haujlwm. Cov kev hloov hauv zos tau tsim thaum lub luag haujlwm tau pib ua tiav thiab ploj thaum lub luag haujlwm xaus, ntawm qhov tod tes, Ntiaj teb hloov pauv yog tsim raws li kev tua pib thiab ploj thaum qhov kev pab cuam xaus
Dab tsi yog qhov sib txawv ntawm lub thawv thiab lub thawv ntawv thiab lub thawv ntawv yog dab tsi?
Ib lub thawv thiab cov ntawv nplawm (qee zaum hu ua boxplot) yog ib daim duab uas nthuav tawm cov ntaub ntawv los ntawm tsib lub ntsiab lus. Nyob rau hauv ib lub thawv thiab whisker zajlus: qhov kawg ntawm lub thawv yog lub sab sauv thiab sab quartiles, yog li lub thawv spans lub interquartile ntau yam. qhov nruab nrab yog cim los ntawm ib txoj kab ntsug hauv lub thawv
Dab tsi yog qhov txawv ntawm cov ntaub ntawv hom thiab qhov sib txawv?
Ib qho kev sib txawv yuav tsum muaj cov ntaub ntawv sib txuas nrog nws, piv txwv li nws tuaj yeem muaj cov ntaub ntawv xws li cov lej, lej lej, cov cim thiab lwm yam. Qhov sib txawv ntawm hom Integer khaws cov lej suav thiab tus cim typevariable khaws cov cim tus nqi. Thawj qhov sib txawv ntawm ntau hom ntaub ntawv yog lawv qhov loj me me
Dab tsi yog qhov zoo sib xws thiab qhov txawv ntawm relays thiab PLC yog dab tsi?
Relays yog electro-mechanical keyboards uas muaj coil thiab ob hom kev sib cuag uas tsis yog NO & NC. Tab sis Programmable Logic Controller, PLC yog lub khoos phis tawj me uas tuaj yeem txiav txim siab raws li qhov kev zov me nyuam thiab nws cov tswv yim & tso tawm
Dab tsi yog qhov sib txawv ntawm qhov ntsuas qhov ntsuas thiab qhov ntsuas thib ob?
Primary index: nyob rau hauv ib tug sequentially order file, qhov Performance index uas nws search key qhia cov sequential order ntawm cov ntaub ntawv. Kuj hu ua clustering index. Secondary index: ib qho Performance index uas nws qhov tseem ceeb tshawb nrhiav qhia qhov kev txiav txim sib txawv ntawm qhov kev txiav txim ntawm cov ntaub ntawv. Kuj hu ua non-clustering index