Kids, Code, and Computer Science Magazine

Node.js

Pedro Lozano on Flickr

Node.js is a software platform to create fast, scalable web applications quickly. These applications also use JavaScript on the server and web browsers.

Two of the biggest programming problems today, and the past decade, are how to handle concurrency and blocking. Concurrency is the ability for a computer system to handle multiple requests at the same time, including requests that must interact with each other. Blocking happens when a computer process has to halt to let an earlier process complete.

If web browsers are to provide many different applications which used to be installed on individual computers, handling multiple requests in real time without blocking is key. Massive online games also are impossible without solving these problems.

Node.js is one solution to this problem (for example, Tornado and Twisted also solve this problem for Python). It is a platform to allow easy programming of fast, scalable applications that run on networks concurrently with no blocking. Node.js was first released in May 2009, by Ryan Dahl, and is under active development. The platform includes a server which runs independently of Apache, nginx, and other traditional server software. And Node.js uses an event driven architecture where events trigger responses from the system.

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Also In The March 2014 Issue

An Interview with Ben Heck

Ben Heckendorn is a self-taught maker with high energy, an internet show on Element14 (The Ben Heck Show), and a wonderfully wicked sense of humor. He also inspired this issue of the magazine.

Circuit Diagrams

Circuit diagrams are maps used to design and build electronic devices. This article describes connections, components, history, and tools used to create circuit diagrams.

Electronics Projects for Beginners

Here are links to projects, tutorials, parts, and online communities to help you get started with electronics projects for beginners.

Zina Lahr

Meet someone who used her love of electronics to create deeply fun and personal robots, gadgets, and other cool stuff.

Version Control Software

Version control software captures an evolving snapshot of one set of code along with all changes in case older versions need to be retrieved.

Brackets, Semicolons, or Nothing, Oh My

How do programming languages know what to process? And in the correct order?

JSON

JSON, or JavaScript Object Notation, is an elegant way to organize data into key:value pairs and make web applications work like software.

I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success.

How to Use an Electronic Breadboard

Electronic breadboards are used to prototype electronic circuit designs and projects without messy solder or hot soldering irons.

Learn More Links for March 2014

Links from the bottom of all the March 2014 articles, collected in one place for you to print, share, or bookmark.

Node.js

Node.js is a software platform to create fast, scalable web applications quickly. These applications also use JavaScript on the server and web browsers.

Non-Relational Databases

These databases are relatively new technology to store data in databases. Here are a few options to explore.

News Wire Stories for March 2014

Interesting stories about computer science, software programming, and technology for the month of February 2014.