This will teach you everything you need to know about transistors. http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-012Fall2003/CourseHo

This will teach you everything you need to know about transistors. http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-012Fall2003/CourseHome/index.htm http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Compute... And this should give you some good background in digital logic and how to assemble stuff like counters and muxes into useful digital circuits. http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-111Introductory-Digital-Systems-LaboratoryFall2002/CourseHome/index.htm http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Compute...