Archive for September 2014

Shellshock Bash Vulnerability

Unix/Linux Bash: Critical security hole uncovered and it seems to be all around in the news. The claim is that popular Linux and Unix shell has a serious security problem that means real trouble for many web servers. Let’s check the facts fist, is this real from some reliable source. There is Vulnerability Summary for

Circuit design software list

What is the best free or cheap electronics design software? It is hard to say in this ever changing field. I some time ago mentioned some software examples in Top Free Electronics Design Tools posting and you can find a long comparison list at Wikipedia Comparison of EDA software page. For the circuit design I would

RF Calculators & Conversions

Do you need to do RF Calculators & Conversions? Pasternack just published new RF calculators and conversion on-line tools to Pasternack’s RF/Microwave calculators and conversions section provides easy-to-use tools ranging from complex mathematical formulas to simple conversions. Besides just making the calculations those tools also show the equations used to make the calculations (so

A history of wearable tech

Wearable technology is a very hot mobile trend now. Think wearables are new? Think again. A history of wearable tech article  shows that Wearables have been around long before the Pebble, Galaxy Gear, and Google Glass hit the market. It all started back in 1961. The article has a great inforgraphic from Mashable.  

7805 Voltage Regulator Teardown

You have most probably used 7805 voltage regulator many times. It is a simple way to get regulated +5V power supply. A Detailed Look at the 7805 Voltage Regulator post at points to an an amazingly detailed article about its theory of operation and implementation of 7805 regulator. As some elements looked a bit odd during