Introduction to Computer Science

This is CS50x, Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming for majors and non-majors alike, with or without prior programming experience. An entry-level course taught by David J. Malan, CS50x teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data structures, encapsulation, resource management, security, software engineering, and web development. Languages include C, Python

Source: Introduction to Computer Science

An Introduction to Semiconductor Physics, Technology, and Industry

The simplest place to start is the materials. Silicon is incredibly important as a material in the industry because it’s a semiconductor. Of course, the name is self-explanatory, but there’s more to it. The key here is the band structure. Band structure refers to the “bands” of energy levels that form due to the sheer number of orbital states that can be occupied in molecules. Those that understand how electron orbitals work will point out that each energy level is discrete, but due to the sheer number of orbital configurations, a seemingly continuous distribution of energy can be seen. However, relatively large gaps still exist; known as a band gap, these are an energy state that an electron cannot occupy.

via AnandTech | An Introduction to Semiconductor Physics, Technology, and Industry – Print View.

And on and on it goes.  This is a great writeup for understanding how integrated circuits work.

The Distributed Database Internals of InfluxDB

You’ll learn how data is replicated within a cluster, how failover occurs, and the evolution of how his team decided to split data across a cluster of machines. Paul also touches on distributed consensus with Raft, replication fault tolerance with a write ahead log, and how we schedule frequent tasks to run in a reliable way across a cluster.

via The Distributed Database Internals of InfluxDB – open source software.

Be a kernel hacker

In this tutorial, we’ll develop a simple kernel module that creates a /dev/reverse device. A string written to this device is read back with the word order reversed (“Hello World” becomes “World Hello”). It is a popular programmer interview puzzle, and you are likely to get some bonus points when you show the ability to implement it at the kernel level as well. A word of warning before we start: a bug in your module may lead to a system crash and (unlikely, but possible) data loss.

via Be a kernel hacker | Linux Voice.

A list of four special Linux distributions for kids

Learning at an early age can be best enhanced in an environment that encourages exploration. There is no other operating system that offers such variety and autonomy to customize the system based on specific needs like Linux. Like toys and clothes for kids, the Linux community has developed specific operating systems that can offer them a fun learning environment. I believe that to boost curiosity in kids, it is important to create a set up that gives them a feeling of wonder.

via A list of four special Linux distributions for kids |

I haven’t installed any of these but found the concept interesting.

The Feynman Lectures on Physics

Caltech and The Feynman Lectures Website are pleased to present this online edition of The Feynman Lectures on Physics. Now, anyone with internet access and a web browser can enjoy reading a high-quality up-to-date copy of Feynman’s legendary lectures. This edition has been designed for ease of reading on devices of any size or shape; text, figures and equations can all be zoomed without degradation.1

via The Feynman Lectures on Physics.

Gear up for the school year with these open source applications

Here are five great open source applications for learning. Share this list to your favorite student or teacher!

via Gear up for the school year with these open source applications |

Play with math, programming, music, and art in the powerful Kojo Learning environment. Based on ideas derived from innovative programs such as Logo and Geometers Sketchpad, Kojo offers a rich platform for students to explore the synthesis of mathematical ideas, coding, creative thinking, and learning.

CSS Zen Garden: The Beauty in CSS Design

There is a continuing need to show the power of CSS. The Zen Garden aims to excite, inspire, and encourage participation. To begin, view some of the existing designs in the list. Clicking on any one will load the style sheet into this very page. The HTML remains the same, the only thing that has changed is the external CSS file. Yes, really.

via CSS Zen Garden: The Beauty in CSS Design.

From: 10 Years

Wow. It’s finally happened. The CSS Zen Garden is 10 years old today.