Ukuhlolwa nokulungiswa kwe-PCB

1. Chip ngohlelo
1. Ama-EPROM chips ngokuvamile awafanele umonakalo. Ngoba lolu hlobo lwe-chip ludinga ukukhanya kwe-ultraviolet ukuze lusule uhlelo, ngeke lulimaze uhlelo phakathi nokuhlolwa. Kodwa-ke, kukhona ulwazi: ngenxa yezinto ezisetshenziselwa ukwenza i-chip, njengoba isikhathi sihamba isikhathi eside), ngisho noma singasetshenzisiwe, singase sonakaliswe (ikakhulukazi sibhekisela ohlelweni). Ngakho-ke kuyadingeka ukuyisekela ngangokunokwenzeka.
2. I-EEPROM, i-SPROM, njll., kanye nama-RAM chips namabhethri, kulula kakhulu ukucekela phansi uhlelo. Ukuthi ama-chips anjalo azobhubhisa uhlelo ngemuva kokusebenzisa i- ukuskena ijika le-VI akukakapheli. Nokho, ozakwethu Lapho sihlangabezana nalolu hlobo lwesimo, kungcono ukuqaphela. Umbhali wenze izivivinyo eziningi, futhi isizathu okungenzeka kakhulu ukuthi: ukuvuza kwegobolondo lethuluzi lokulungisa (njenge-tester, insimbi yokunamathisela kagesi, njll.).
3. Nge-chip enebhethri ebhodini lesifunda, ungayisusi ebhodini kalula.

2. Setha kabusha isekethe
1. Uma kunesifunda esikhulu esihlanganisiwe ebhodini lesifunda okufanele lilungiswe, kufanele kuqashelwe inkinga yokusetha kabusha.
2. Ngaphambi kokuhlolwa, kungcono ukukubuyisela kudivayisi, uvule futhi uvale umshini ngokuphindaphindiwe bese uzama. Bese ucindezela inkinobho yokusetha kabusha izikhathi ezimbalwa.

3. Ukuhlolwa komsebenzi kanye nepharamitha
1. ingabonisa kuphela indawo eyisikiwe, indawo yokukhulisa indawo kanye nendawo yokugcwala lapho ithola idivayisi. Kodwa ayikwazi ukukala amanani athile afana nemvamisa yokusebenza nesivinini.
2. Ngendlela efanayo, kuma-chips edijithali e-TTL, izinguquko zokukhishwa kuphela zamazinga aphezulu naphansi zingakwazi ukwaziwa, kodwa isivinini semiphetho yayo ekhuphukayo newayo ayikwazi ukutholwa.

4. I-Crystal oscillator
1. Ngokuvamile i-oscilloscope kuphela (i-crystal oscillator idinga amandla) noma imitha yefrikhwensi ingasetshenziselwa ukuhlola, futhi i-multimeter ayikwazi ukusetshenziselwa ukulinganisa, ngaphandle kwalokho indlela yokufaka esikhundleni ingasetshenziswa kuphela.
2. Amaphutha ajwayelekile e-crystal oscillator yilawa: a. ukuvuza kwangaphakathi, b. isifunda esivulekile sangaphakathi, c. ukuchezuka kwefrikhwensi eguquguqukayo, d. ukuvuza kwe-peripheral capacitor exhunyiwe. Isimo sokuvuza lapha kufanele silinganiswe ngejika le-VI elithi .
3. Izindlela zokwahlulela ezimbili zingasetshenziswa ekuhlolweni kwebhodi lonke: a. Ngesikhathi sokuhlolwa, ama-chips ahlobene eduze ne-crystal oscillator ayahluleka. b. Awekho amanye amaphuzu wephutha atholakalayo ngaphandle kwe-crystal oscillator.

4. Kunezinhlobo ezimbili ezivamile zama-crystal oscillator: a. izikhonkwane ezimbili. b. izikhonkwane ezine, lapho iphinikhodi yesibili inikwe amandla, futhi ukunaka akufanele kufinyezwe ngokuthanda kwakho. Ezinhlanu. Ukusatshalaliswa kwezenzakalo zephutha 1. Izibalo ezingaphelele zezingxenye ezinephutha zebhodi lesifunda: 1) ukulimala kwe-chip 30%, 2) izingxenye ezihlukene zonakalisa i-30%,
3) 30% wezintambo (PCB ucingo lwethusi oluhlanganisiwe) luphukile, 4) I-10% yohlelo yonakalisiwe noma ilahleke (kukhona ukukhuphuka).
2. Kungabonakala kulokhu okungenhla ukuthi uma kunenkinga ngoxhumano nohlelo lwebhodi lesifunda okufanele lulungiswe, futhi alikho ibhodi elihle, elingajwayele ukuxhumana nalo, futhi alikwazi ukuthola uhlelo lwangempela, kungenzeka. yokulungisa ibhodi akuyona enkulu.