Intro

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Intro

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Introduction LE210 Lecture Notes 2002 Edition: Introduction 1 .• Electrical Engineering is the field which deals with devices that depend solely on the motion of electrons in metals. • Electronics is the technology of the passage of charged particles in gas, vacuum, or semiconductors. LE210 Lecture Notes 2002 Edition: Introduction 2 .History • The origin of term "Electronics" began in 1895, H.A. Lorentz postulated the existence of discrete charges which he called "electrons". • 1906 De Forest built the first active electronic device, called "triode" made the first amplifier. • Semiconductor era began in 1908. A crystal diode was invented by Pickard. LE210 Lecture Notes 2002 Edition: Introduction...

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