HEATKEYS

Free source of SPICE circuit files and tutorials for the hands-on learning of electronics through the SPICE simulator. Also inlcudes SPICE basics and a command summary. Links to free demo versions.

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Microsoft Excel Consulting, Online Classes, video tutorials, free macros, and walkthroughs for beginners and advanced levels. Also includes helpful tips, tricks, code, and a forum.

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Scientific physics forums for professionals and students to discuss serious issues and topics regarding physics in theory, practice, study and reality. Students can also find help for homework and career perspectives

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A discussion forum for electronics and circuits

MathWorks is the world’s leading developer of technical computing software for engineers and scientists in industry, government, and education

Microchip provides Microcontroller and Analog Semiconductors, with low-risk product development, lower total system cost and faster time to market.