PCB design related Links

[marce]

Having returned to work after a bit of time off to be ill, I returned to find Windows 7 newly installed on my machine.
So I thought I'd sort some of my desktop links etc, mainly related to PCB design, as that is what I do, here are the first batch that I have checked, to enshure they still work.
So the following are misc. PCB design related links which may be usefull.

IPC:
http://www.ipc.org/ContentPage.aspx?Pageid=IPC
IPC Printed Board Defense Roadmap | IPC

Saturn PCB Toolkit:
PCB Via Current | PCB Trace Width | Differential Pair Calculator | PCB Impedance

Signal Integrity Etc:
Speeding Edge consultants specialize in high-speed PCB and system design disciplines
beTheSignal.com
High-Speed Digital Design Publications Archive by Keyword

Calculators:

Ohm's Law Calculators
The CircuitCalculator.com Blog PCB Via Calculator
The CircuitCalculator.com Blog PCB Trace Width Calculator
Microsoft Office 2010 Best Price - Buy & Download
Right-Angled Triangle Calculator
PARALLEL RESISTOR CALCULATOR
PCB Impedance and Capacitance Calculator
http://www.pcb123.com/help/calculators/
Skin Effect Calculator - Calculate Skin Depth
Electrostatic Capacitance Conversion - FREE Unit Converter
Electronics 2000 | Series / Parallel Resistor Calculator

EMC:
Tech Tips
EMC Information Centre - The EMC Journal (Free in the UK)

Thermal:
Calculator : Thermal conductivity for PCBs

All sorts of stuff:
Cadence Community
Index of
PCB Matrix Corp. - Mentor Graphics
All About Circuits : Free Electric Circuits Textbooks
Index of /pub/ibis
I2C bus, I2S bus, protocols, interfaces and specifications
DXF Group Codes [ACG]
Index of /products/analog/pdf/
WikiComponents
Hours Calculator

Magazines:
Printed Circuit Design & Fab Magazine Online
ICONNECT007 IConnect007 Home
+Plastic Electronics Magazine - Analysis for Organic & Printed Electronics
http://www.circuitsassembly.com/cms/
http://circuitsassembly.com/blog/?p=756

Forums:
Forum for Electronics
Mentor Graphics Communities: Community: Professor Tom's Corner

NPL PCB defect database:
Pictures of PCB and soldering problems.
National Physical Laboratory Industry Defects Database

Listening Tests for Communications:
http://www.meyersound.com/support/pa...h/glossary.htm