Ko te kupu "mahara flash" Ko inaianei i runga i te ngutu o te katoa. Kei te maha te wā "puku kohiko" ara tuatahi-graders i roto i te whakahaere e whakamahia ana. Tenei hangarau ki te tere maere riro rongonui. Ano, matapae maha kaitätari e i roto i te mahara flash heke mai tata e whakakapi ngā pūrere rokiroki e hāngai ana i runga i kōpae autō. He aha tonu te mea anake ki te mau i te ahunga whakamua te whanaketanga me ona painga. Koinei, he tokomaha, korero o tenei hua hou, tata mōhio e te taua mahara flash. I runga i te ringa kotahi, me te kaiwhakamahi ki te mahi i te pūrere, a pehea mahi reira ona mahi - take iti. Heoi, ki te whai i te iti rawa i te matauranga taketake tika ki nga tangata mātauranga.
He aha te mea mahara flash?
Ka rite ki matau koutou, rorohiko i maha ngā momo o ngā pūrere rokiroki: kōwae mahara, puku pakeke me te puku optical. Ko te rua whakamutunga - te reira rongoā electromechanical. Ko RAM - tino pūrere hiko. He he kohinga o transistors i runga i te maramara huihui te maramara motuhake. takoto Ko tōna taa i roto i te meka e Kei te rongoa raraunga hoki rite te roa rite te kawehiko turanga o ia kī mana faaitoitohia te. I tēnei wā tatou i muri tango i te titiro. He kowaiwai o tenei hapa mahara Flash. atu tenei rokiroki raruraru kahore he ngaohiko waho Kitea te whakamahi i tere transistors kuwaha. I roto i te ngaro o te tiaki mana waho i roto i te pūrere taua e taea kia puritia te wa feunga roa (i te iti rawa 10 tau). Hei whakamārama i te parau tumu o te mahi, he mea e tika ana ki te haamana'o i te taketake o te hikohiko.
Nahea te transistor?
Kua riro ēnei āhuatanga whakamahia kia whānuitia e ko reira onge, te wahi e kore ratou e whakamahia. Ahakoa banal whakakā marama te tahi mau taime whakatakotoria taviri peia. Kia pehea te i te transistor matarohia whakaritea? Kei te hāngai te reira i runga i rua rauemi Semiconductor, tetahi o nei he kawe ia hiko (n), me te tahi atu poka (p). Hei whiwhi i te transistor ohie, he mea e tika ana ki te ngā rauemi, pērā i npn me ia kawehiko poraka plug. I kotahi kawehiko tino tono (kaituku) ngaohiko te. Ka taea te whakahaeretia ratou na roto i te huri i te nui o te pūmanawa i runga i te putanga toharite (turanga). Puta Tango i runga i te kaikohi - toru o te whakapā tino. Ko reira kitea e ka hoki ki te āhua kūpapa ki te ngaro o te ngaohiko turanga. Ko pūrere transistor ki te kuwaha fleshek paku rerekē whāriki tere: te mua o te rauemi turanga Semiconductor whakanohoia te he kahu angiangi o uruhanga me te kuwaha tere - tahi hanga e ratou he "pute" na ka karanga. A, no te faaohiparaa i te ngaohiko tāpiri ki te turanga o te transistor ki kia whakatuwheratia e haere i te nāianei e hāngai ana ki te arorau kore. Otiia ki te ki te kuwaha hoatu te kotahi tiaki (irahiko), neutralizes tona mara te pānga o te turanga-hanga - ka kore te pūrere ki kati (wae arorau). Na roto i te ine i te ngaohiko i waenganui i te kaituku me te kaikohi e taea te whakatau i te aroaro (ngaro ranei) o te tiaki i runga i te kuwaha tere. Te tuku i te tiaki i runga i te kuwaha i te whakamahi i te pānga kauhanga (Fowler - Nordheim). Hei tango i te hiahia ki te hanga i te tiaki teitei (9) ki te ngaohiko tōraro me te turanga pai ki te kaituku. Ka waiho te tiaki te kuwaha. Mai te mea tonu tupu te hangarau, kua reira kua whakaarohia ki te whakakotahi i te whakatinanatanga me te transistor tikanga ki te kuwaha tere. Tenei whakaaetia te "ūkui" ki atu tenei i te ngaohiko iti, me te whakaputa i te pūrere atu kiato (kahore he take ki te tutakina). whakamahi USB mahara Flash tenei parau tumu (NAND Hanganga).
Ko te kupu, na roto i te whakakotahi i enei transistors i te poraka, i reira ka taea ki te hanga i te mahara i roto i nei te takahi puritia nga raraunga tuhia kahore huringa mō ngā tekau tau. Pea anake te drawback o puku flash hou - te maha o te rohe huringa Tuhituhi.