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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第六章 單板電腦
若你為 Intel Galileo 準備好 SD 記憶卡，並且開機，將會看到各種程序執行時輸出的訊
息，如圖 6-8 所示。
圖 6-8 Galileo 開機時的畫面
一旦作業系統載入完畢，就會開始接掌管理板子的各項資源，包括磁碟空間、記憶體、
以及 CPU 計算量。
舉例而言，當你在上執行網站伺服器或記錄溫度的程式，會從各個層級向作業系統要求
資源，硬體資源的管理作業處於「核心（kernel）」之內。在 Linux 系統中，這些資源都
會以「驅動程式」或「核心模組」的形式掛載到檔案系統裡。
除了能夠更有效率地管理計算資源，作業系統通常也能在嵌入式裝置
裡
執行 Node.js。
嵌入式系統和 Node.js 的開發工作，都會受選擇哪一套作業系統的影響有所不同，接下
來，讓我們概觀介紹能執行 Node.js 的知名作業系統。底下的說明描述很重要，有助於
更加了解開發板的組態設定。
OpenWRT
OpenWRT 的發展歷史甚為有趣，當初 Linksys 公司的路由器韌體，因含有一些 Linux 指
令工具，違反了 GPL 授權條款，導致 Linksys 必須釋出路由器韌體的原始碼。WRT 第
一個公開釋出成為 OpenWRT 的時間是 2003 年。
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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.