Cov khoom siv ua kua siv lead ua digital tso saib module yog cov khoom siv ua haujlwm uas tsim los ntawm cov kua siv lead ua kua segmented thiab ib qho kev sib koom ua ke. Nws tsuas tuaj yeem tso saib cov lej thiab qee cov cim qhia. Segment LCD cov ntxaij vab tshaus feem ntau yog siv hauv cov khoom siv nqa tau thiab hnab tshos loj. Vim qhov me me ntawm cov khoom siv no, cov khoom siv yuav tsum tsis txhob raug tsim los ua ib qho kev sib cais kom ntau li ntau tau. Txawm hais tias yuav tsum muaj kev sib cais ntawm cov khoom siv hauv qee daim ntawv thov, nws yuav tsum ua tsis tau tsuas yog nrog kev ua haujlwm, tab sis kuj nrog qee cov haujlwm xws li kev txais cov ntaub ntawv, kev ua cov ntaub ntawv, kev cia thiab kev sib kis tau zoo siab txais tos los ntawm kev ua lag luam vim tias lawv muaj qee yam. general thiab tshwj xeeb muaj nuj nqi. Cov khoom siv digital ntau dua ua kua siv lead ua zaub modules yog raws li hauv qab no.
1. suav module
Nws yog ib qho kev suav cov khoom siv sib sau ua ke los ntawm xya-ntu kua siv lead ua kua zaub nrog cov lej sib txawv, tus neeg tsav tsheb decoder, lossis lub txee. Nws muaj lub luag haujlwm ntawm kev sau, ua thiab nthuav tawm cov lej. Tam sim no, cov khoom tseem ceeb uas tuaj yeem pom nyob rau hauv Suav lag luam yog: chav tsev ua kua siv lead ua zaub zaub module uas tau tsav los ntawm CD4055 decoder tsav tsheb, thiab cov kua siv lead ua kua ua ke los ntawm ICM72II, ICM7231, ICM7232, CDI4543, UPD145001, HD44100, thiab lwm yam. -ntsis, 6-ntsis, 8-ntsis, 10-ntsis, 12-ntsis, 16-ntsis suav module sib sau ua ke los ntawm lub cuab yeej. Thaum xaiv hom kev suav no, koj yuav tsum xyuam xim rau cov ntsiab lus hauv qab no:
1. Tshawb nrhiav cov haujlwm: Txawm hais tias qee qhov no hu ua" suav modules", feem ntau ntawm lawv tsis tuaj yeem suav ncaj qha. Qee qhov ntawm lawv cov chaw nres nkoj tsuas yog BCD code interface daim ntawv, qee qhov yog BCD code ntxiv rau lub rooj vag davhlau ya nyob twg input interface daim ntawv, thiab qee qhov kuj yog daim ntawv interface uas tuaj yeem txuas ncaj qha mus rau qhov sib npaug thiab cov chaw nres nkoj, thiab lwm yam, yog tias koj xav tau. los xam Los yog sau ib txoj hlua ntawm tus lej, thiab koj yuav tsum tau teeb tsa cov khoom siv sib txuas, tau kawg, yuav muaj cov khoom sib tw suav nrog rau ntawm cov kua siv lead ua kua module.
⒉ Saib ntawm cov qauv: LCD cov cuab yeej yuav muaj ntau txoj kev teeb tsa thiab kev teeb tsa. Vim li no, koj yuav tsum tau xyuam xim rau nws cov yam ntxwv ntawm cov qauv thaum xaiv. Feem ntau hais lus, hom kev suav no feem ntau yog tsim los ntawm zebra conductive roj hmab strips, yas (los yog hlau) xovxwm thav ntawv thiab PCB boards los txuas cov kua siv lead ua kua zaub thiab Integrated circuits tau sib sau ua ke. Nws sab nrauv muaj peb hom: solder point type, pin type, thiab circuit board pin type.
3. Ua tib zoo saib xyuas cov khoom siv hluav taws xob: Ib qho khoom siv yuav tsum siv lub zog sib koom ua ke kom ntau li ntau tau. Cov khoom siv ua kua siv lead ua ntau ntau suav cov khoom siv yog ib hom fais fab mov thiab ob hom fais fab mov, nrog rau ntau qhov sib txawv xws li 5V thiab 9V.
Qhov thib ob, qhov ntsuas module
Qhov no yog ib qho qauv tsim los ntawm kev sib sau ua ke ntawm ntau ntu LCD npo thiab ib qho kev sib txuas ua ke nrog kev ua haujlwm ntawm kev txiav txim siab, tsav tsheb, suav, thiab hloov pauv A / D. Txij li cov kev sib xyaw ua ke siv nyob rau hauv nws muaj A / D hloov dua siab tshiab muaj nuj nqi, nws tuaj yeem hloov cov khoom siv hluav taws xob analog hluav taws xob rau hauv cov duab digital. Peb paub tias txhua lub cev muaj pes tsawg leeg, txawm tias muaj tshuaj lom neeg (xws li pH, thiab lwm yam) tuaj yeem hloov mus rau hauv cov hluav taws xob analog, tsuav yog nws tau nruab nrog ib qho sensor, hom qauv no tuaj yeem paub ntau npaum li cas ntawm cov ntaub ntawv thiab tso saib, Nws kuj yog yooj yim heev rau siv. Cov qauv kev sib xyaw ua ke siv los ntawm cov ntsuas ntsuas ntsuas feem ntau yog ICL7106, ICL7116, ICL7126, ICL7136, ICL7135, ICL7129, thiab lwm yam. Cov haujlwm thiab cov yam ntxwv ntawm cov kev sib xyaw ua ke no txiav txim siab cov haujlwm thiab cov yam ntxwv ntawm cov ntsuas ntsuas. Raws li cov khoom siv ntsuas, nws yuav tsum tau ntsuas raws li kev cai. Tom qab kev pom zoo los ntawm lub tuam tsev ntsuas, ib daim ntawv pov thawj ntsuas yog affixed rau cov khoom.
3. Timing module
Lub sij hawm module yog hom qub tshaj plaws ntawm lub sijhawm uas cov kua siv lead ua kua siv rau lub sijhawm. Sib sau ua ke cov kua siv lead ua kua thiab lub sijhawm sib xyaw ua ke ua ke, nws yog lub sijhawm ua haujlwm nrog cov haujlwm ua tiav. Txij li thaum nws yog ib rooj plaub uas tsis muaj lub moos tiav, nws yog hu ua lub sij hawm module. Txawm hais tias lub sij hawm module tau siv dav, nws cov qauv siv dav dav thiab cov qauv sij hawm yog qhov nyuaj rau kev yuav hauv khw. Koj tsuas tuaj yeem yuav lossis xaj kom tsim nyog saib txav, sijhawm sijhawm thiab suav modules los ntawm cov tuam ntxhab ntawm cov moos hluav taws xob thiab cov saib. Txawm hais tias lawv cov tsos zoo ib yam, lawv cov qauv qhia txawv. Cov lej tso tawm los ntawm lub sijhawm teem sijhawm yog tsim los ntawm ob tus lej hauv pawg ntawm ob. Txhua tus lej ntawm kev suav module tau teem caij sib law liag. Qee lub sij hawm modules kuj muaj sij hawm thiab tswj kev ua haujlwm, yog li hom module no tuaj yeem sib sau ua ke ntawm qee cov khoom siv hauv tsev, xws li: xov tooj cua cassette recorders, CD player, microwave ncu, mov cookers thiab lwm yam khoom siv hluav taws xob.
