Saddex sano iyo bar ka dib Raspberry Pi 3 Raspberry Pi Foundation jiilka cusub ee looxyada . Moodelka "B" ayaa durba diyaar u ah dalabka, SoC cusub BCM2711, kaas oo gabi ahaanba dib loo habeeyay ee chip BCM283X hore loo isticmaalay, oo la soo saaray iyadoo la adeegsanayo tignoolajiyada habka 28nm. Qiimaha boodhka ayaan waxba iska beddelin oo weli waa 35 doolarka Maraykanka ah.
SoC-da wali waxa ku jira afar 64-bit ARMv8 cores oo ku shaqeeya kaliya soo noqnoqoshi waxyar kordhay (1.5GHz halkii 1.4GHz) Isla mar ahaantaana, isbeddelka habka farsamada ayaa suurtogal ka dhigay in lagu beddelo Cortex-A53 oo leh wax-qabad sare oo Cortex-A72 ah, kaas oo u qaaday waxqabadka heer cusub. Intaa waxaa dheer, u gudubka ayaa loo sameeyay isticmaalka xusuusta LPDDR4, taas oo, marka la barbar dhigo xusuusta LPDDR2 ee hore loo isticmaalay, waxay bixisa saddex laab kordhinta xawaaraha. Natiijo ahaan, imtixaannada waxqabadka guddiga cusubi wuxuu ka sarreeyaa qaabkii hore ee Raspberry Pi 3B+ 2-4 jeer.
Farqiga kale ee muhiimka ah waxaa ka mid ah ku daridda kontaroolaha PCI Express, laba dekedood oo USB 3.0 ah (oo lagu daray laba dekedood oo USB 2.0 ah) iyo laba dekedood oo Micro HDMI ah (horayna hal cabbir buuxa oo HDMI ah ayaa la isticmaalay), taasoo kuu oggolaanaysa inaad ku muujiso sawirrada laba kormeerayaal leh tayada 4K. . Xawaaraha garaafyada VideoCore VI si weyn ayaa loo cusboonaysiiyay, kaas oo taageera OpenGL ES 3.0 oo awood u leh in uu dejiyo H.265 muuqaal leh tayada 4Kp60 (ama 4Kp30 laba kormeerayaal). Awoodda waxaa lagu bixin karaa USB-C (hore USB micro-B), iyada oo la sii marayo GPIO ama ikhtiyaari PoE HAT (Awood ka badan Ethernet).
Waxaa intaa dheer, dhibaatada muddada dheer soo jirtay ee RAM aan ku filnayn ayaa la xalliyey - guddiga hadda waxaa lagu bixiyaa noocyo leh 1, 2 iyo 4 GB RAM (oo ku kacaya $ 35, $ ββ45 iyo $ 55, siday u kala horreeyaan), taas oo ka dhigaysa guddiga cusub xal ku habboon. abuurista goobo shaqo, goobo ciyaaraha, iyo server-yada, albaabada guryaha smart, unugyada kantaroolka robot-ka iyo nidaamyada casriga casriga ah.
Xakamaynta Gigabit Ethernet waa la hagaajiyay, kaas oo hadda ku xidhan SoC iyada oo loo sii marayo baska RGMII goonida ah, kaas oo u oggolaanaya in ay gaadho waxqabad buuxa oo la shaaciyey. USB hadda waxaa lagu fuliyaa iyada oo loo marayo kontaroole VLI gaar ah oo ku xiran PCI Express oo bixiya wadarta guud ee 4Gbps. Sidii hore, guddidu waxay ku qalabaysan tahay 40 dekedood oo GPIO ah, DSI (xidhiidhka shaashadda taabashada), CSI (xidhiidhka kamaradaha) iyo chip wireless oo taageera heerka 802.11ac, hawlgalka 2.4GHz iyo 5GHz soo noqnoqda iyo Bluetooth 5.0.
Isla mar ahaantaana, siidaynta cusub ee qaybinta ayaa la daabacay , kaas oo siinaya taageero buuxda Raspberry Pi 4. Siideynta ayaa sidoo kale caan ku ah u gudubka saldhigga xirmada Debian 10 "Buster" (horey Debian 9), dib-u-qaabayn muhiim ah oo ah interface interface iyo ku darida darawal cusub Mesa V3D oo leh Taageerada 3D si weyn ayey u horumarisay (ay ku jirto la heli karo iyadoo la isticmaalayo OpenGL si loo dedejiyo browserka). Laba shir ayaa loo diyaariyey in la soo dejiyo - mid la soo gaabiyo) nidaamyada server oo dhamaystiran (), oo la siiyay deegaanka isticmaalaha (fargeeto ka yimid LXDE). Si aad uga rakibto Waxaa jira ilaa 35 kun oo baakadaha la heli karo.
Source: opennet.ru