Play-Hookey (Electronics refresher site)

[tim-from-pa]

Jeeeez.. I wish we had internet in the late 1970's when I studied this stuff. Excellent electronics refresher, and he especially goes into digital electronics needed for automation and the precursor to the computer. This is actually old stuff, but still used as the foundation for digital electronics. Placing the cursor over the inputs actually changes the states from blue to red so this isn't just schematics, but active behavior showing how it works. Next best thing to the old fashioned bread board with IC's and resistors/capacitors.

http://www.play-hookey.com/