Gerdes System Technology (Popularity: ): Describes Pic microcontroller projects for motor control, chargers, and maximum power point (MPP) solar applications. ETCAI Products (Popularity: ): Sells computer based software for teaching electricity and electronics. The programs are designed to supplement lecture and textbook instruction. How Electronic Devices Work (Popularity: ): Basic introduction to a variety of electronics technology applications targeted for the layperson. Glencoe/McGraw-Hill (Popularity: ): Provides information on the Basic Skills in Electricity and Electronics Series (Rainbow Series), and links to student and instructor sites. Antenna and microwave engineering tutorials (Popularity: ): Collection of teaching pages for general access Basic Electronics (Popularity: ): Basic Electronics is an online E-book covering subjects from ohms law to logic circuits. Lots of animation and troubleshooting simulations included. Transistors (Popularity: ): transistors tutorials, OpAmps (Popularity: ): Operational Amplifiers Use & Operation 555 Timer (Popularity: ): 555 Timer Tutorials Digital Logic (Popularity: ): Tutorials Fundamentals of Digital Logic