In this laboratory namual, we have included descriptions and discussions on identification of basic electronic compounds and their characteristics. These include characteristics of PN junction diode, Zener Diode, LED, Rectifiers, CB transistor, Multimeter and Cathode-ray Oscilloscope. At the same time, these technologies have combined with the standard hardware to perform general-purpose as well as complex instrument functions. Naturally, this new material is in addition to the comprehensive information on the more traditional instruments, their building block elements and how they can work together in systems. It provides a one-volume source of information on all aspects of electronics and instrumentation as they are actually defined and used. The instrument chapters describe what they are, what they do, how they do it, and how to get the most from them. It is critical that all those who use these devices understand and feel comfortsble with the tools of their trade.