I. Kutsanangura "Electronic Bookshelf"
"Electronic Bookshelf" haisi nzvimbo yekuchengetera zvinhu asi kuti yakakura-chikero che-chiverengero chekuverenga kana kuti smart reading terminal. Chinangwa chayo chikuru ndechekudzokorora manejimendi ebhuku uye ruzivo rwekuverenga rwemaraibhurari echinyakare kana masherufu emabhuku mudhijitari fomati.
II. Zvikamu zvakakosha uye Mabasa eErekiniki Booksherufu
1. Hardware Devices & Mabasa Avo
Hombe E Ink Display: Inotangira pa7.8 inches kusvika 13.3 inches kana kuti hombe (yakakura kwazvo kudarika standard 6–7 inch e-vaverengi), inopa nzvimbo yekuverenga yakafanana nemabhuku kana magazini. Vazhinji vanoshandisa E Ink tekinoroji yekunyaradza kweziso uye kushanda nesimba.
Main processor: Kubva paARM Cortex-A kana Cortex-M series application processors (AP) kana microcontrollers (MCU), inobata mashandisirwo ehurongwa, rendering, faira maneja, uye network kutaurirana.
Memory: Inosanganisira RAM (ye-nguva chaiyo) uye Flash/ROM (yekuchengetedza).
Wireless Connectivity: Wireless{0}Fi ndiyo yakajairwa; -mamodhi epamusoro anogona kuwedzera 4G/5G kana Bluetooth.
Bhatiri: Huru-unokwanisa kutsigira nguva yekuverenga yakawedzerwa.
Maitiro ekupinda: Tsigiro yesikikirini, ine mamwe mamodheru anochengeta mapeji chaiwo-shandura mabhatani.
Interfaces: USB-C (yekuchaja uye kutumira data), uye pamwe MicroSD kadhi slot.
Madhidhiyo Mamiriro: Vatauri uye maikorofoni (pamamodheru akasarudzwa) ekutamba kweaudiobook kana kuisa izwi.
2. Software & Core Mabasa
E-Kuverengwa KweBhuku: Kunotsigira mafomati makuru (EPUB, PDF, MOBI, TXT, nezvimwewo) nezvigadziriso zvinogoneka (mafonti, marongerwo, manotsi, shanduro).
Raibhurari Management: Inoronga miunganidzwa mikuru senge raibhurari yemuviri, inogonesa kupatsanura, kutsvaga, kuronga, uye bookmarking.
Content Access: Inobatana neWi-Fi kune zvitoro zvemabhuku zvepaindaneti (zvakavakwa-mukati kana wechitatu-mubato, zvakaita seJD Read, WeChat Read, Kindle) kuitira kudhaunirodha uye kuyananisa mafambiro ekuverenga.
Notes & Annots
Kubata Gwaro: Inotarisa pakuverenga kwePDF, zvirevo, uye kuyerera; imwe inotsigira Hofisi gwaro rekuona (yakanakira basa / kudzidza).
Mawedzero eApp: Vhura masisitimu (semuenzaniso, Android) ita kuti vashandisi vaise yechitatu-yebato rekuverenga kana maapps anoshanda.
III. Crystal Oscillators muElectronics Bookshelves: Mapakeji, Frequencies, uye Zvinotsanangurwa
Masherufu emagetsi emabhuku, seakaomesesa akaiswa masisitimu, anoda akasiyana mawachi masosi emamodule akasiyana. Pazasi pane kuparara kweyakajairwa crystal oscillator yakatarwa:
|
Inoshanda Module |
Typical Package Size |
Typical Frequency |
Load Capacitance (Common Range) |
Zvinodiwa Pakuita Kwakakosha |
|
Main System Clock |
3225 (Mainstream) |
8MHz, 24MHz (Mainstream) |
8pF, 10pF, 12pF |
Miniaturization, kugadzikana |
|
2520 / 2016 (Trend) |
19.2MHz, 26MHz, 48MHz |
8pF, 10pF, 12pF |
Miniaturization, kugadzikana |
|
|
Wireless Module |
2016 (Mainstream) |
26MHz (Wi{{1}Fi Mainstream) |
8pF, 10pF |
Kurongeka kwepamusoro (± 10ppm kana zvirinani), ruzha rwepasi |
|
1612 (Trend) |
40MHz (Yakajairika) |
8pF, 10pF |
Kurongeka kwepamusoro (± 10ppm kana zvirinani), ruzha rwepasi |
|
|
1612 (Trend) |
38.4MHz (Zvimwe) |
8pF, 10pF |
Kurongeka kwepamusoro (± 10ppm kana zvirinani), ruzha rwepasi |
|
|
Chaiyo-Nguva Clock (RTC) |
3215 (Mainstream) |
32.768kHz |
6pF, 7pF, 9pF, 12.5pF |
Simba rakaderera,{0}}kugadzikana kwenguva refu, kuita zvishoma |
|
1610 (Miniaturized) |
32.768kHz |
6pF, 7pF, 9pF, 12.5pF |
Simba rakaderera,{0}}kugadzikana kwenguva refu, kuita zvishoma |
|
|
Bata/Display Control |
3225, 2520 |
12MHz, 24MHz |
10pF, 12pF |
Kugadzikana chaiko, kudhura-kushanda |
|
Audio Codec |
3225, 2520 |
12.288MHz, 11.2896MHz |
10pF, 12pF |
Kugadzikana, pasi jitter |
|
Auxiliary Chips |
3225, 2016 |
Zvakananga (semuenzaniso, 25MHz) |
Sezvinodiwa nechip |
Kugadzikana chaiko, kudhura-kushanda |
IV. Nei Aya maCrystal Oscillator Akakosha
Kupa Nguva Yakananga "Kurova Kwemoyo"
Zvikamu zvedhijitari sema processors, mamodule ekutaurirana, uye mainterfaces zvinotsamira pane yakatsiga masaini ewachi kuwiriranisa mashandiro. Pasina ivo, masisitimu aizotadza kushanda zvakanaka kana kushanda zvisina tsarukano.
Meeting Module-Zvakananga Zvinodiwa
Mashandiro eProsesa: Yepamusoro-nguva, yakagadzikana main wachi (kuburikidza nePLL kuwanda) inoita kuti CPU ishande zvakanaka.
Hunhu Husina Waya: Yepamusoro-kurongeka, yakaderera-chikamu{2}}makristasi eruzha (eg, 26/40MHz) akakosha paWi-Fi/BT transceivers, zvinokanganisa kugadzikana kwekonesheni, mitengo yedata, uye kunaka kwemasaini.
Kuchengeta nguva: The 32.768kHz RTC crystal inochengetedza nguva chaiyo ine ultra-simba rakaderera, kunyangwe panguva yekurara.
Kushanda Kurongeka: Bata sampling, ratidza kuzorodza, uye kutamba odhiyo chimwe nechimwe chinoda wachi dzakatsaurirwa kurongedza mashandiro.
Kutsigira Miniaturization
Surface-Mount (SMD) makristasi (3225, 2520, 2016, 1612) anokwana compact PCBs, achisangana nezvinonetsa zvemagetsi zvemazuva ano.
Kuvimbisa Kugadzikana uye Kuvimbika
Makristasi anofanirwa kushingirira kushanduka kwetembiricha uye kuzunguzika, aine frequency yakasimba-kugadzikana uye nekusimba-kwenguva refu.
Kudzora Kushandisa Simba
Yakaderera{{0}makristasi eRTC emagetsi anowedzera nguva yekumira, ukuwo kutonga kwakanaka kwemamwe makristasi kunoderedza kushandiswa kwesimba rose.
Kuenzanisa Mutengo uye Kuita
Vagadziri vanosarudza makristasi anosangana nematekinoroji nemitengo yakakwana, vachifunga kusiyana kwehukuru hwepakeji, huchokwadi, uye mhando.
V. Mhedziso
Masherufu emabhuku emagetsi anoda zvakasiyana-siyana, -zvinoita makristaro oscillator akakwirira. Kunzwisisa dhizaini yavo yedhizaini uye imwe neimwe module zvinodiwa (pakeji, frequency, capacitance yekuremerwa, kuita metrics) chinhu chakakosha. Kubva pamapurosesa kusvika kumamodules asina waya uye maRTC, zvikamu zvenguva izvi zvinopesvedzera kushanda kwemudziyo, kugadzikana, uye ruzivo rwemushandisi-zvichiita kuti zvikoshese kusherufu yemabhuku ecosystem.
