Electronics is the field of manipulating electrical currents and voltages using passive and active components that are connected together to create circuits. Electronic circuits range from a simple load resistor that converts a current to a voltage, to computer central-processing units (CPUs) that can contain more than a million transistors. The following indices and documents provide a basic reference for understanding electronic components, circuits, and applications.
http://electronicstopics.blogspot.com/2008/10/welcome-to-world-of-electronics.html -- http://mail.python.org/mailman/listinfo/python-list