Kev nkag siab yuam kev 1: Kev txuag nqi

Feem ntau yuam kev 1: Cov xim dab tsi yuav tsum muaj qhov taw qhia lub teeb ntawm lub vaj huam sib luag xaiv? Kuv tus kheej nyiam xiav, yog li xaiv nws.

Kev daws teeb meem zoo: Rau cov teeb pom kev lag luam, xim liab, ntsuab, daj, txiv kab ntxwv, thiab lwm yam, tsis hais qhov loj me (hauv qab 5MM) thiab ntim khoom, lawv tau paub tab ntau xyoo, yog li tus nqi feem ntau tsawg dua 50 xees. Lub teeb xiav qhia tau tsim nyob rau hauv peb lossis plaub xyoos dhau los. Cov thev naus laus zis kom loj hlob thiab kev ruaj khov ntawm cov khoom lag luam yog qhov tsis zoo, yog li tus nqi yog plaub lossis tsib zaug kim dua. Yog tias koj tsim lub vaj huam sib luag pawg qhia xim yam tsis muaj qhov tshwj xeeb, tsis txhob xaiv xiav. Tam sim no, lub teeb pom kev xiav feem ntau tsuas yog siv rau qee lub sijhawm uas tsis tuaj yeem hloov los ntawm lwm cov xim, xws li tso tawm cov teeb liab video.

Feem ntau yuam kev 2: Cov rub-down / rub-up resistors zoo li tsis muaj teeb meem ntau nrog lawv cov nqi tiv thaiv. Tsuas yog xaiv tus lej 5K.

Kev daws teeb meem zoo: Qhov tseeb, tsis muaj tus nqi tiv thaiv ntawm 5K hauv kev ua lag luam. Qhov ze tshaj plaws yog 4.99K (qhov tseeb 1%), ua raws li 5.1K (qhov tseeb 5%). Tus nqi yog 4 npaug siab dua li ntawm 4.7K nrog 20% ​​qhov tseeb. 2x ua. Tus nqi tsis kam ntawm 20% precision kuj muaj tsuas yog 1, 1.5, 2.2, 3.3, 4.7, 6.8 hom (nrog rau cov lej sib npaug ntawm 10); sib txuas, 20% precision capacitor kuj tsuas muaj qhov saum toj no ob peb lub peev xwm. Rau cov resistors thiab capacitors, yog tias koj xaiv tus nqi uas tsis yog cov hom no, koj yuav tsum siv qhov tseeb dua, thiab tus nqi yog ob npaug. Yog tias qhov kev xav tau qhov tseeb tsis loj, qhov no yog qhov siv nyiaj pov tseg. Tsis tas li ntawd, qhov zoo ntawm cov resistors kuj tseem ceeb heev. Qee lub sij hawm ib pawg ntawm cov resistors tsis zoo txaus los rhuav tshem ib qhov project. Nws raug nquahu kom koj yuav lawv hauv khw muag khoom tus kheej xws li Lichuang Mall.

Feem ntau yuam kev 3: 74XX rooj vag Circuit Court tuaj yeem siv rau qhov kev xav no, tab sis nws qias neeg heev, yog li siv CPLD, nws zoo li ntau qhov siab kawg.

Kev daws teeb meem zoo: 74XX rooj vag Circuit Court tsuas yog ob peb xees, thiab CPLD tsawg kawg yog kaum ob lub las (GAL / PAL tsuas yog ob peb las, tab sis nws tsis pom zoo), tus nqi tau nce ntau zaus, tsis hais, nws yog rov qab mus rau ntau lawm, cov ntaub ntawv, thiab lwm yam. Ntxiv ob peb zaug ua haujlwm. Raws li qhov kev pom zoo tsis cuam tshuam rau kev ua tau zoo, nws yog qhov tsim nyog siv 74XX nrog cov nqi siab dua.

Feem ntau yuam kev 4: PCB tsim cov cai ntawm lub rooj tsavxwm no tsis siab, tsuas yog siv cov hlau nyias nyias thiab txiav nws.

Kev daws teeb meem zoo: Tsis siv neeg xaim hluav taws xob yuav inevitably coj mus rau thaj tsam PCB loj dua, thiab tib lub sijhawm nws yuav tsim ntau zaus ntau dua li kev xaim hluav taws xob. Nyob rau hauv ib pawg loj ntawm cov khoom, PCB manufacturers muaj qhov tseem ceeb rau kev txiav txim siab ntawm kab dav thiab tus naj npawb ntawm vias raws li tus nqi. , Lawv feem cuam tshuam cov txiaj ntsig ntawm PCB thiab cov khoom siv laum noj. Tsis tas li ntawd, thaj tsam ntawm PCB pawg thawj coj kuj cuam tshuam rau tus nqi. Yog li ntawd, tsis siv neeg xaim yog khi kom nce tus nqi ntawm cov khoom siv hluav taws xob.

Feem ntau yuam kev 5: Peb qhov system yuav tsum muaj siab heev, suav nrog MEM, CPU, FPGA thiab tag nrho cov chips yuav tsum xaiv qhov ceev tshaj plaws.

Kev daws teeb meem zoo: Tsis yog txhua feem ntawm lub tshuab ua haujlwm siab ua haujlwm ntawm kev kub ceev, thiab txhua zaus lub cuab yeej nrawm nce los ntawm ib theem, tus nqi yuav luag ob npaug, thiab nws kuj muaj qhov cuam tshuam zoo rau cov teeb meem kev ncaj ncees. Yog li ntawd, thaum xaiv ib lub nti, nws yog ib qho tsim nyog yuav tau xav txog qhov kev siv ntawm qhov sib txawv ntawm cov cuab yeej, tsis yog siv qhov ceev tshaj plaws.

Feem ntau yuam kev 6: Ntev npaum li qhov kev zov me nyuam ruaj khov, cov lej ntev dua thiab kev ua haujlwm qis dua tsis yog qhov tseem ceeb.

Kev daws teeb meem zoo: CPU ceev thiab qhov chaw nco yog ob qho tib si yuav nrog nyiaj. Yog tias koj siv ob peb hnub ntxiv los txhim kho qhov kev ua haujlwm zoo thaum sau cov lej, ces qhov kev txuag nqi los ntawm kev txo qis CPU zaus thiab txo qhov peev xwm nco tau yog qhov tsim nyog. CPLD / FPGA tsim zoo ib yam.