Synopsys, Inc.
Science, Technology, Electronics, CAD - Synopsys, Inc.. Develops, markets and supports high level design automation software for designers of integrated circuits and electronic systems.
https://www.synopsys.com/
Electronics
CAD EDA PCB Software
Science, Technology, Electronics, Design - Cadence. CAD EDA PCB Software.
http://www.cadence.com/
How-to guides for just about anything!
Science, Technology, Electronics, Design - Knowledge Hound. How-to guides for just about anything!
https://www.knowledgehound.com/
Sci.Electronics.Repair FAQ: Home Page
Science, Technology, Electronics, Repair - Sci.Electronics.Repair FAQ. Frequently asked questions from the science.
http://www.repairfaq.org/
Over 50 'How Stuff Works' articles.
Science, Technology, Electronics, Design - How Stuff Works. Over 50 'How Stuff Works' articles.
https://www.howstuffworks.com/