October 2016
Intermediate to advanced
266 pages
5h 45m
English
Content preview from Node.js for Embedded Systems
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Chapter 1. Connecting Worlds
JavaScript is unique in its flexibility to run in different environments. Though the language originated in web browsers, JavaScript today drives web applications, and runs in databases and robots, too. In the latter cases, people often use the terms JavaScript and Node.js (a JavaScript runtime environment) interchangeably.
Without JavaScript, connecting devices to networks would entail writing software in three different languages. Embedded devices in particular often require C or C++, while user interfaces in web browsers require web technologies. Besides embedded devices and user interfaces, writing middleware for communication within networks might require yet another programming language.
When working in different environments, JavaScript is an interesting choice—it’s becoming the universal programming language. This chapter begins with an overview of embedded devices and connecting everything, followed by an introduction to basic JavaScript and its different runtime environments. You will also learn about the background of Node.js.
Why the Internet of Things?
On a physical level, computers are pieces of silicon with hundreds of millions (up to billions) of transistors. The transistors act as switches, either to store state or to run binary operations. In contrast to mechanical switches, transistors act on voltages and electrical signals.
Transistors are getting smaller and smaller. People refer to this phenomenon as Moore’s law. To understand ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.