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Single-board microcontroller tswv yim thiab tso zis

Single-board microcontroller tswv yim thiab tso zis

Mar 11, 2019

Microcontroller systems muab ntau hom kev tawm tswv yim thiab kev tsim tawm los tso cai rau kev siv software kom tswj tau tus txheej txheem "lwm qhov tseeb". Discrete digital I / O muab ib me ntsis ntawm cov ntaub ntawv (rau lossis tawm). Analog signals, sawv cev ntawm qhov sib txawv ntawm qhov sib nrauj, xws li kub los yog qhov siab, kuj tuaj yeem nkag thiab tawm kev rau cov microcontrollers.


Discrete digital inputs thiab outputs tej zaum yuav raug los ntawm microprocessor bus cov ntaub ntawv tsuas yog los ntawm ib lub lable addressable, los sis tej zaum yuav ua los ntawm ib qho kev tawm tswv yim / tawm IC, xws li Intel 8255 lossis Motorola 6821 parallel input / output adapter. Tom qab ib leeg-nti micrcontrollers muaj cov tswv yim thiab cov zis pins muaj. Cov tswv yim / tso tawm no feem ntau tsis pub kom txaus tam sim no kom khiav lag luam xws li cov roj teeb lossis cov motors, yog li ntawm cov khoom siv lub xeev cov kev sib txuas ntawm microcontroller digital outputs, thiab inputs raug cais los ntawm cov teebmeem kev sib tw khiav ceev thiab kev tiv thaiv kev tiv thaiv.


Ib qho los yog ntau qhov kev hloov hauv analog, nrog ib qho analog multiplexer thiab hom analog rau digital converter, muaj nyob rau ntawm ib co microcontroller boards. Analog outputs yuav siv lub digital-to-analog converter lossis, ntawm qee qhov microcontrollers, tej zaum yuav raug tswj los ntawm cov tes taw xo paj nruag. Rau discrete inputs, sab nraud circuits tej zaum yuav tsum tau ntsuas cov nyiaj siv, los yog kom muaj kev khiav dej num xws li kev sib tw hauv choj los yog kev them nyiaj txias txias.


Kom tswj cov nqi tivthaiv, ntau lub npas tau tsim nrog cov khoom siv kho vajtse ntxiv tiam sis tsis muaj cov khoom siv rau cov circuits ntsia, tawm hauv pawg thawj coj saib. Tus Circuit Court tau ntxiv raws li qhov kev xaiv ntawm tus me nyuam, los yog yuav tsum tom qab ntawd.


Nws yog kev xyaum rau cov laug cam kom muaj qhov chaw "prototyping areas", thaj chaw ntawm pawg thawj coj saib ua lub voj voog uas muaj lub voj voog uas muaj tsheb npav thiab lub hwj chim, tab sis tsis muaj cov cai tswj xyuas. Ob tug tswj xyuas, tshwj xeeb tshaj yog cov uas tau npaj rau kev cob qhia, kuj muaj xws li ib lub pluggable, rov qab los ua daim phiaj rau kev ywj pheej ntawm cov I / O ntxiv uas yuav raug hloov lossis tshem tawm rau cov haujlwm tom qab.