Ukuhlolwa kunye nokulungiswa kwePCB

1. Chip ngeprogram
1. Iichips ze-EPROM azifanelekanga ngokubanzi umonakalo.Ngenxa yokuba olu hlobo lwe-chip ludinga ukukhanya kwe-ultraviolet ukucima inkqubo, ayiyi kulimaza inkqubo ngexesha lovavanyo.Nangona kunjalo, kukho ulwazi: ngenxa yezinto ezisetyenziselwa ukwenza i-chip, njengoko ixesha lihamba ixesha elide), nangona lingasetyenziswanga, lingonakaliswa (ikakhulukazi libhekisela kwiprogram).Ngoko kuyimfuneko ukuyibuyisela kangangoko kunokwenzeka.
2. I-EEPROM, i-SPROM, njl., kunye nee-RAM chips ezineebhetri, kulula kakhulu ukutshabalalisa inkqubo.Nokuba iitshiphusi ezinjalo ziya kutshabalalisa inkqubo emva kokusebenzisa iukuskena ijiko le-VI ayikagqibi.Nangona kunjalo, oogxa Xa sidibana nolu hlobo lwemeko, kungcono ukuba silumke.Umbhali wenze iimvavanyo ezininzi, kwaye esona sizathu sinokwenzeka kukuba: ukuvuza kwegobolondo yesixhobo sokugcina (njengomhloli, intsimbi yokuthambisa yombane, njl. njl.).
3. Kwi-chip enebhetri kwibhodi yesiphaluka, ungayisusi ebhodini ngokulula.

2. Setha kwakhona isekethe
1. Xa kukho isekethe enkulu edibeneyo kwibhodi yesekethe eza kulungiswa, kufuneka kuqwalaselwe ingxaki yokusetha kwakhona.
2. Ngaphambi kovavanyo, kungcono ukuyibuyisela kwisixhobo, uvule kwaye uvale umatshini ngokuphindaphindiweyo kwaye uzame.Kwaye cinezela iqhosha lokuseta kwakhona amaxesha amaninzi.

3. Uvavanyo lomsebenzi kunye neparameter
1.inokubonisa kuphela indawo esikiweyo, indawo yokukhulisa kunye nendawo yokugcwalisa xa ibhaqa isixhobo.Kodwa ayinakulinganisa amaxabiso athile anje ngesantya sokusebenza kunye nesantya.
2. Ngendlela efanayo, kwii-chips zedijithali ze-TTL, kuphela utshintsho oluphumayo lwamanqanaba aphezulu kunye naphantsi luyakwazi ukubonwa, kodwa isantya sokunyuka nokuwa kwayo asikwazi ukufunyanwa.

4. I-Crystal oscillator
1. Ngokuqhelekileyo kuphela i-oscilloscope (i-crystal oscillator kufuneka inikwe amandla) okanye i-frequency meter ingasetyenziselwa ukuvavanya, kwaye i-multimeter ayinakusetyenziselwa ukulinganisa, ngaphandle koko indlela yokutshintshwa ingasetyenziswa kuphela.
2. Iimpazamo eziqhelekileyo ze-crystal oscillator zezi: a.ukuvuza kwangaphakathi, b.isekethe yangaphakathi evulekileyo, c.ukutenxa ngamaza okuguquguquka, d.ukuvuza kwe-peripheral edibeneyo capacitors.Into evuzayo apha kufuneka ilinganiswe yi-VI curve ye.
3. Iindlela zokugweba ezimbini zinokusetyenziswa kuvavanyo lwebhodi yonke: a.Ngexesha lovavanyo, iichips ezinxulumene kufuphi ne-crystal oscillator ziyasilela.b.Awekho amanye amanqaku afunyenweyo ngaphandle kwe-crystal oscillator.

4. Kukho iintlobo ezimbini eziqhelekileyo ze-crystal oscillators: a.izikhonkwane ezimbini.b.izikhonkwane ezine, apho isikhonkwane sesibini sinikwe amandla, kwaye ingqalelo akufanele ibe mfutshane-ijikeleze ngokuthanda.Ntlanu.Ukusasazwa kweziganeko eziphosakeleyo 1. Izibalo ezingaphelelanga zeengxenye eziphosakeleyo zebhodi yesekethe: 1 ) umonakalo we-chip 30%, 2) amacandelo ahlukeneyo alimaza i-30%,
3) 30% yocingo (PCB ucingo lobhedu oludityanisiweyo) luphukile, i-4) i-10% yeprogram yonakaliswe okanye ilahlekile (kukho ukunyuka okuphezulu).
2. Kunokubonwa apha ngasentla ukuba xa kukho ingxaki yokudibanisa kunye neprogram yebhodi yesekethe ukuba ilungiswe, kwaye akukho bhodi ilungileyo, engayazi kakuhle uxhulumaniso lwayo, kwaye ayikwazi ukufumana iprogram yokuqala, into enokwenzeka. yokulungisa ibhodi akukho mkhulu.