Ndezvipi Zvakavanzika Pamusoro peCrystal Oscillator Zvakavanzwa mu'E-Bhukukesi'?

A. Chii chinonzi E-Bhukukesi?
"e-bookcase" kazhinji hairevi kabati remukati, asi hombe e-bookcase kuverenga kana hungwaru hwekuverenga. Chinangwa chayo chikuru kutevedzera kana kutsiva manejimendi ebhuku uye ruzivo rwekuverenga rwemaraibhurari echinyakare/masherufu emabhuku, asi ari mudhijitari.

B.Ndezvipi Zvikamu Zvikuru zveE-Bhukukesi Nemashandiro Azvo?

1. Hardware Devices uye Mabasa:
Yakakura-saizi E Ingi Sikirini: Kazhinji inobvira pa7.8 inches kusvika 13.3 inches kana kutokura (yakakura kudarika zvakajairika 6-7 inch e-book readers), inopa nzvimbo yekuverenga iri pedyo neiyo yemabhuku chaiwo kana magazini. Tekinoroji yescreen inonyanya kuve E Ink, inova -inoshamwaridzika uye inoshanda nesimba.
Main Control processor: An application processor kana microcontroller yeARM Cortex-A kana Cortex-M series, ine basa rekushandisa system, rendering, file management, network network, etc.

-)* Memory: RAM (Random Access Memory) uye ndangariro yekuchengetedza.

Wireless Connection: Wi-Fi (zvakakosha), uye mamwe{1}}emhando yepamusoro anogona kutsigira 4G/5G kana Bluetooth.
Bhatiri: Bhatiri guru-rinokwanisa kutsigira-kuverenga kwenguva refu.
Bata Sikirini/Mabhatani Anobatika: Inotsigira kubata-bata, uye mamwe mamodheru anochengeta peji chaiyo-inobatidza mabhatani.
Interfaces: USB-C (kuchaja/kutumira data), uye inogonawo kuva nekadhi reMicroSD.
Mutauri / Maikorofoni: Inotsigira redhiyo bhuku rekutamba kana kuisa izwi (kune mamwe mamodheru).

2. Software uye Mabasa

E-Kuverenga kwebhuku: Inotsigira mafomati akajairika (EPUB, PDF, MOBI, TXT, nezvimwewo), uye inopa marongero ekuverenga akapfuma (mafonti, kuseta, kusiyana, manotsi, shanduro, nezvimwewo).

Huru-Magadzirirwo eChitoro cheBhuku: Anotarisira nhamba huru yemabhuku nezvikamu, tsvaga, kuronga, uye kuunganidzwa, sekutarisira bhukukesi/raibhurari.

Kutora Zvirimo: Inodyidzana nezvitoro zvemabhuku zvepaindaneti (zvakavakwa-mukati kana wechitatu-mapato akaita seJD Reading, WeChat Reading, Kindle, nezvimwewo) kuburikidza neWi-Fi, kudhaunirodha mabhuku, uye kuwiriranisa mafambiro ekuverenga.

Manotsi Nezvirevo: Inotsigira-kutora, kujekesa, uye zvirevo kuburikidza nechinyoreso kana kiyibhodhi.

Kugadziriswa Kwemagwaro: Mamwe mamodheru anosimbisa kuverenga kwePDF, chirevo, uye kugona kuyerera, uye kunyange kutsigira Hofisi gwaro rekuona (rakakodzera hofisi / kudzidza).

Kuwedzera Zvishandiso: Mamodheru ane sisitimu yakavhurika (yakadai seAndroid) inobvumira kuiswa kwe-kwemunhu wechitatu kuverenga kana maturusi maapplication.

Ndeapi Package Saizi uye Frequency yeCrystal Oscillators Anoshandiswa mune Aya Hardware uye Software Devices?

E-bookcase igadziriro yakaomarara, uye mamodule anoshanda akasiyana anoda mawachi akasiyana. Iwo akajairwa mapakeji saizi uye mafambiro ekristaro oscillator anoratidzwa mune inotevera tafura:

D.Sei Aya maCrystal Oscillator Achishandiswa?
1. Kupa Kwazvo "Kurova Kwemoyo" Zviratidzo:
Iwo epakati processors, mamodule ekutaurirana, uye mainterface edhijitari masisitimu ese anoda yakanyanya kurongeka uye yakagadzikana wachi chiratidzo kuwiriranisa mashandiro ese emukati. Iyo crystal oscillator ndiyo iyi referensi wachi sosi. Pasina iyo, sisitimu haigone kushanda kana kuti ichamhanya zvine mutsindo.
2. Kuzadzikisa Zvinodiwa Zvakananga zveMamodule Akasiyana:
Main Control Performance: Yakakwira-nguva uye yakatsiga wachi huru ndihwo hwaro hwekushanda zvakanaka kweSitimu, uye inopa mafambisirwo ekushanda epamusoro anodiwa neCPU kuburikidza nePLL frequency kuwanda.
Hunhu Hwekukurukurirana Husina Waya: Hunhu hwepamusoro{-, hwakaderera-chikamu-ruzha 26/40MHz crystal oscillator ndihwo hwaro hwekushanda kwematransceivers eWi{{5}Fi/BT RF, ayo anokanganisa zvakananga kumodedzwa kwemasaini, kunzwisiswa, mwero wekufambiswa kwedata, uye kugadzikana. Kusakwana kurongeka kunotungamira kune matambudziko ekubatanidza, kubviswa, uye kunonoka kumhanya.
Nguva Yekurekodha: Iyo 32.768kHz crystal oscillator ndiyo musimboti weRTC wedunhu, ichipa inoenderera nguva yekuverenga referensi ine yakanyanya kuderera simba rekushandisa, kuve nechokwadi chekuti mudziyo haurasikirwe nenguva uye unochengeta nguva chaiyo kana yakadzimwa / mukurara mode.
Basa rekuita: Bata sampling, ratidza kuzorodza, kutamba odhiyo, nezvimwe, zvese zvinoda yavo mareferensi wachi kuronga basa.

3. Miniaturization uye Kubatanidzwa:

Surface-mount crystal oscillators (SMD) yakaita se3225, 2520, 2016, 1612, neSMD shanduro dziripo, zvichizadzisa kudiwa kwenzvimbo yakamanikana zvikuru yePCB mumidziyo yemagetsi yemazuva ano.

4. Kugadzikana uye Kuvimbika:

Zvigadzirwa zvemagetsi zvinoda kushanda zvakatsiga munzvimbo dzakasiyana siyana (kushanduka kwetembiricha, kuzunguzika kudiki). Crystal oscillator inoda kuva nekakawanda kanowanda-maitiro etembiricha (zviratidzo zvekugadzikana), kuvhunduka uye kusavimbika, uye kuvimbika-kwenguva refu.

5. Power Consumption Control:

Kunyanya kuRTC crystal oscillators, simba ravo rakaderera zvakanyanya rakakosha pakuwedzera nguva yekumira yechishandiso. Iko kushandiswa kwesimba kwemamwe makristasi oscillator inodawo kuve mukati meiyo inodzoreka renji.

6. Mutengo{1}}Kushanda zvakanaka:

Pamusoro pekusangana kwekuita zvinodiwa, kusarudza crystal oscillator ine yakanakisa mutengo kuita chinhu chakakosha kufunga kune vanogadzira. Pane misiyano yakakosha yemitengo pakati pekristaro oscillator yemapakeji akasiyana, mazinga chaiwo, uye mhando.

Mhedziso: Iyo e-bookcase inzvimbo yekushandisa ine zvakasiyana-siyana uye zvepamusoro zvinodiwa zvekristaro oscillator. Kunzwisisa kuumbwa kwayo kwehurongwa uye zvinodikanwa zvega yega module yekristaro oscillators (package, frequency, load capacitance, core performance indicators) ndiyo kiyi. Kutarisa kune maviri akakwirira-kukosha uye epamusoro-mapoinzi anodiwa ewachi huru newachi dzisina waya, kupa zvigadzirwa zvine kuenzanisa, kuita kwakavimbika, uye kukwikwidza, zvichiwedzerwa nerutsigiro rwehunyanzvi, zvichabatsira Hangjing kuvhura musika nemazvo. Kunyatsoteerera kune miniaturization (2520, 1612) uye yakakwirira chaiyo, kugadzikana kwepamusoro kuchava maitiro mukushandiswa kwekristaro oscillators!