Raspberry Pi 4B: Kakompyuta yaying'ono komanso yamphamvu Yowonetsedwa

Raspberry Pi 4B: Kakompyuta kakang'ono komanso kamphamvu

Kufotokozera Kwachidule:

Mafotokozedwe Akatundu
Ndi bolodi ya microcomputer yozikidwa pa ARM, yogwiritsa ntchito SD/MicroSD khadi ngati memory hard disk. Pali 1/2/4 zolumikizira USB ndi 10/100 Efaneti mawonekedwe mozungulira khadi motherboard (mtundu A alibe netiweki doko), amene akhoza kulumikizidwa Kiyibodi, mbewa ndi netiweki chingwe, komanso TV linanena bungwe mawonekedwe kwa ma analogi amakanema ndi mawonekedwe amtundu wa HDMI wotanthauzira kwambiri. Zomwe zili pamwambazi zonse zaphatikizidwira pa boardboard yomwe ndi yayikulupo pang'ono kuposa kirediti kadi. Ili ndi ntchito zonse zofunika za PC ndipo imangofunika kulumikizidwa ndi TV. ndi kiyibodi, mukhoza kuchita ntchito zambiri monga spreadsheets, mawu processing, kusewera masewera, kusewera mkulu-tanthauzo mavidiyo, ndi zina. Mtundu wa Raspberry Pi B umangopereka bolodi lamakompyuta, osakumbukira mphamvu, kiyibodi, chassis kapena zolumikizira.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Dzina: Raspberry Pi4B
SOC: Broadcom BCM2711
CPU: 64-bit 1.5GHz quad-core (28nm process)
CPU: Broadcom VideoCore V@500MHz
Bluetooth: Bluetooth 5.0
Mawonekedwe a USB: USB2.0*2USB3.0*2
HDMI: yaying'ono HDMI * 2 imathandizira 4K60
Mawonekedwe amagetsi: Mtundu C (5V 3A)
Multimedia: H.265 (4Kp60 decode);
H.264 (1080p60 decode,1080p30 encode);
OpenGL ES, 3.0 graphicsencode);
OpenGL ES, zithunzi za 3.0
Netiweki ya Wifi: 802.11AC opanda zingwe 2.4GHz/5GHz dual-band Wifi
Netiweki yawaya: True Gigabit Ethernet (doko la netiweki litha kufikiridwa
Ethernet poe: Efaneti kudzera pa HAT yowonjezera

Zofunikira za Raspberry Pi 4B:
Kuthamanga mwachangu:
1. Purosesa yaposachedwa ya Broadcom 2711 quad-core Cortex A72 (ARM V8-A) 64-bit SoC yokhala ndi wotchi ya 1.5GHz imathandizira kugwiritsa ntchito mphamvu; ndi zotentha pa Pi 4 + B zikutanthauza kuti CPU pa BCM2837 SoC tsopano ikhoza kuthamanga pa 1.5 GHz Ndiko kusintha kwa 20% kuposa mtundu wakale wa Pi 3, womwe umayenda pa 1.2GHz.
2. Kanema wamavidiyo pa Pi 4 B akwezedwa ndi chithandizo chapawiri chowunikira pazosankha mpaka 4K kudzera pamadoko awiri; hardware kanema decoding mpaka 4Kp60, thandizo kwa H 265 decoding (4kp 60); H.264 ndi MPEG-4 decoding (1080p60).

Mwachangu opanda zingwe:
1. Poyerekeza ndi chitsanzo cha Pi 3 chapitacho, kusintha kwakukulu mu Pi 4 B ndiko kuphatikizidwa kwatsopano, mofulumira; chip opanda zingwe chapawiri-band chomwe chimathandizira 802.11 b/g/n/ac LAN opanda zingwe.
2. Dual-band 2.4GHz ndi 5GHz opanda zingwe LAN imathandizira maulumikizidwe othamanga a netiweki osasokoneza pang'ono, ndipo ukadaulo watsopano wa mlongoti wa PCB umathandizira kulandira bwino.
3. 5.0 yatsopano imakupatsani mwayi wogwiritsa ntchito kiyibodi yopanda zingwe / trackpad yokhala ndi mitundu yambiri kuposa kale, popanda ma dongles owonjezera; amasunga zinthu mwadongosolo.

Kulumikizidwa kwa Ethernet:
1. Pi 4 B ili ndi mawayilesi othamanga kwambiri, ndiukadaulo wa USB 3.0; chifukwa cha chipangizo chokwezera cha USB/LAN; muyenera kuwona kuthamanga mpaka 10 mwachangu kuposa mitundu yam'mbuyomu ya Pi.
2. Mutu wa GPIO umakhalabe womwewo, mapini 40; kumbuyo kwathunthu kumagwirizana ndi ma boardboard am'mbuyomu, monga mitundu itatu yoyambirira ya Pi. Komabe; ziyenera kuzindikirika kuti mapulagi atsopano a PoE angagwirizane ndi zigawo zomwe zili pansi pa zipewa zina; monga zipewa za utawaleza.