Ukungaqondi kahle 1: Ukonga izindleko

Iphutha elivamile 1: Imuphi umbala okufanele isikhombisi sikhanyise iphaneli? Mina ngokwami ​​ngincamela okuluhlaza okwesibhakabhaka, ngakho-ke kukhethe.

Isixazululo esihle: Izibani zenkomba emakethe, ezibomvu, eziluhlaza okotshani, eziphuzi, eziwolintshi, njll., kungakhathaliseki ukuthi zingakanani (ngaphansi kuka-5MM) nokupakishwa kwazo, sezikhulile amashumi eminyaka, ngakho intengo ngokuvamile ingaphansi kwamasenti angu-50. Ukukhanya kwenkomba eluhlaza okwesibhakabhaka kwasungulwa eminyakeni emithathu noma emine edlule. Ukuvuthwa kobuchwepheshe kanye nokuzinza kokuhlinzekwa kuphansi kakhulu, ngakho intengo ibiza ngokuphindwe kane noma kahlanu. Uma uklama umbala wesikhombi sesitaki sephaneli ngaphandle kwezidingo ezikhethekile, ungakhethi okwesibhakabhaka. Njengamanje, ukukhanya kwenkomba eluhlaza okwesibhakabhaka kuvamise ukusetshenziswa ezikhathini ezingakwazi ukushintshwa ngeminye imibala, njengokubonisa amasignali evidiyo.

Iphutha elivamile lesi-2: Lezi zivimbeli zokudonsela phansi/zokudonsa azibonakali zinendaba kakhulu namanani azo okumelana. Vele ukhethe inombolo engu-5K.

Isixazululo esihle: Eqinisweni, alikho inani lokumelana le-5K emakethe. Okuseduze kakhulu ngu-4.99K (ukunemba okungu-1%), kulandelwa u-5.1K (ukunemba okungu-5%). Intengo yezindleko iphakeme izikhathi ezi-4 kunaleyo ye-4.7K ngokunemba okungu-20%. 2 izikhathi. Inani lokumelana le-20% yokumelana nokunemba linezinhlobo ezingu-1, 1.5, 2.2, 3.3, 4.7, 6.8 kuphela (kuhlanganise nokuphindaphinda okuphelele kwe-10); ngokuhambisanayo, i-20% yokunemba kwe-capacitor nayo inamanani angaphezulu ambalwa kuphela we-capacitance. Kuma-resistors nama-capacitors, uma ukhetha inani ngaphandle kwalezi zinhlobo, kufanele usebenzise ukunemba okuphezulu, futhi izindleko ziphindwe kabili. Uma izidingo zokunemba zingezinkulu, lokhu kuwukumosha okumba eqolo. Ngaphezu kwalokho, ikhwalithi ye-resistors nayo ibaluleke kakhulu. Kwesinye isikhathi inqwaba yama-resistors aphansi yanele ukucekela phansi iphrojekthi. Kunconywa ukuthi uzithenge ezitolo ezizisebenzelayo njenge-Lichuang Mall.

Iphutha elivamile 3: Isifunda sesango le-74XX singasetshenziselwa le logic, kodwa ingcolile kakhulu, ngakho-ke sebenzisa i-CPLD, ibonakala iphezulu kakhulu.

Isixazululo esihle: Isifunda sesango le-74XX singamasenti ambalwa kuphela, futhi i-CPLD okungenani inqwaba yamadola (i-GAL/PAL ingamadola ambalwa kuphela, kodwa ayinconywa), izindleko zikhuphuke izikhathi eziningi, ingasaphathwa, ibuyiselwe ekukhiqizweni, ekubhalweni, njll. Engeza izikhathi eziningana emsebenzini. Ngaphansi kwesisekelo sokungathinti ukusebenza, ngokusobala kufanelekile kakhulu ukusebenzisa i-74XX ngokusebenza kwezindleko eziphezulu.

Iphutha elivamile 4: Izidingo zedizayini ze-PCB zaleli bhodi aziphakeme, vele usebenzise intambo encane bese uyihlela ngokuzenzakalelayo.

Isixazululo esihle: Ukufaka izintambo okuzenzakalelayo kuzothatha indawo enkulu ye-PCB, futhi ngesikhathi esifanayo kuzokhiqiza izintambo eziphindwe kaningi kunezintambo ezenziwa ngesandla. Eqoqweni elikhulu lemikhiqizo, abakhiqizi be-PCB banokucatshangelwa okubalulekile mayelana nobubanzi bomugqa kanye nenani le-vias ngokuya ngentengo. , Athinta ngokulandelana isivuno se-PCB kanye nenani lamabhithi okubhoboza asetshenzisiwe. Ngaphezu kwalokho, indawo yebhodi le-PCB nayo ithinta intengo. Ngakho-ke, i-wiring ezenzakalelayo ibophezelekile ukwandisa izindleko zokukhiqiza zebhodi lesifunda.

Iphutha elivamile 5: Izidingo zesistimu yethu ziphezulu kakhulu, kufaka phakathi i-MEM, i-CPU, i-FPGA futhi wonke ama-chips kufanele akhethe ashesha kakhulu.

Isixazululo esihle: Akuzona zonke izingxenye zesistimu yesivinini esikhulu ezisebenza ngesivinini esikhulu, futhi ngaso sonke isikhathi isivinini sedivayisi sikhuphuka ngeleveli eyodwa, intengo icishe iphindeke kabili, futhi iphinde ibe nomthelela omubi kakhulu ezinkingeni zesignali yobuqotho. Ngakho-ke, lapho ukhetha i-chip, kuyadingeka ukucabangela izinga lokusetshenziswa kwezingxenye ezahlukene zedivayisi, kunokuba usebenzise ngokushesha kakhulu.

Iphutha elivamile lesi-6: Inqobo nje uma uhlelo luzinzile, ikhodi ende nokusebenza kahle okuphansi akubalulekile.

Isixazululo esihle: Isivinini se-CPU nendawo yenkumbulo kokubili kuthengwa ngemali. Uma uchitha izinsuku ezimbalwa ezengeziwe ukuze uthuthukise ukusebenza kahle kohlelo lapho ubhala ikhodi, khona-ke ukonga izindleko kusukela ekunciphiseni imvamisa ye-CPU nokunciphisa umthamo wenkumbulo kubalulekile. Idizayini ye-CPLD/FPGA iyafana.