Semiconductor devices surpass vacuum-tube devices in mechanical strength, reliability, and durability. The'over- all dimensions and power consumption of fapparatus em-ploying them are drastically reduced.Semiconductor devices arc widely used in industrial auto-mation, computers and instrumentation, transport, com-munications, medicine, household electronic devices, and other equipment.This book provides various aspects of semiconductor Devices Measurements and tests written in a simple and lucid style to help the reader grasp the information quickly and easily. The book contains 6 chapters and each chapter present update material sufficient to meet the students expectations from a basic textbook.The main aim of this book is to acquaint the reader with the fundamentals of semiconductor devices technology and techniques of pertainent measurements and tests.