August 2017
Intermediate to advanced
272 pages
5h 32m
Chinese
Content preview from Node.js物聯網裝置開發
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235
附錄 B
物聯網系統的硬體開發板
Raspberry Pi
Raspberry Pi 是塊單板電腦（SBC, Single Board Computer），設計之初的用意是供學生
使用，用來學習 Linux 與程式設計，但其目標還要更加遠大。根據 Raspberry Pi 基金會
會長 Jack Lang 所述，他們想要達成的使命是「徹頭徹尾翻新桌上電腦系統」。
為了實現上述目標，Raspberry Pi 已歷經好幾次改本，有第一代和第二代。第一代有
Model A 與 Model B 兩個版本，差異在於 RAM 大小、CPU 規格、定價、以及網路連接
能力。舉例而言，Model B 預設內建乙太網路，然而 Model A 並沒有，需要另加配件，
才能連上網路。
Raspberry Pi 最受歡迎的版本是 Model B+，請見圖 B-1，這塊板子的核心是 Broadcom
的 BCM2835 系統單晶片，整合了 CPU、GPU、USB 埠。板子上有個 SD 記憶卡插槽，
所以把 Linux 系統放在 SD 卡裡並執行。
從圖可看出，Raspberry Pi 板子尺寸不同於 Arduino，與之相比，「Raspi」含有 SD 卡
插槽、數個 USB 埠、顯示卡、以及作為數位輸出入的針腳。Raspi 腳位的功能，可到
http://pi.gadgetoid.com/pinout
觀看查詢；Arduino 擁有數位與類比的腳位，但 Raspi 只有
數位腳位。
因為板子尺寸不同，所以不能直接把 Arduino ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.