Google Search Adds Graphing Calculator

Google will now show a graph of a function entered in the search box.  Here is an example for the sinc function.

The official google search blog gives more details on the new graphing feature.

If you want more than a quick graph, I recommend Wolfram Alpha.  Here is the output for the same function.

Here is my original post on Wolfram Alpha.

SDRAM Power Calculator

Need to estimate battery life for your next embedded design? With SDRAM systems that can be difficult but Micron has a few system power calculator excel spreadsheets you can download to help. They have separate spreadsheets for SDRAM, DDR, DDR2, DDR3 and RLDRAM II. They also have some useful tech note pdfs on calculating system power.

Prototype PCB Calculator

If you want to compare prototype PCB costs without visiting every manufacturer's website try this javascript PCB design calculator. The author, Limor Fried, has a great page on finding parts and blog with many other interesting electronics projects and resources for prototyping. You can see her talk about open source hardware in a video at the O'Reilly OSCON 2007 website.