by Sy Levine
This three volume CD present difficult information in a simplified manner,taking the reader from basic electrical theory to modern discrete components.Each chapter stands independently and includes a "self-quiz" (withanswers). Part One explores basic conceptsand passive components laying the foundation for more advanced study.Part Two discusses the discrete semi-conductors and opto-electronicsfound in most present-day and many early elevator controllers. Part Three covers integrated circuits and computer concepts, as well asthe "black boxes" found in today's microprocessor-based elevatorcontrollers.