What is electronics?? The word electronics within itself is complete definition. Electronics is combination of two words electron+mechatronics . Electronics is the study of flow of electrons through various materials and devices It is the study of their behavior and effects in vacuums, gases, and semiconductors, and with devices using such electrons. History of electronics A ctual history began with the invention of vacuum diode by J.A. Fleming, in 1897; and, after that, a vacuum triode was implemented by Lee De Forest to amplify electrical signals. Atom An atom is the smallest unit of matter. Atom is made up of three tiny kinds of particles I. Protons II. Neutrons III. Electrons Electronics in daily life Instrumentation: Microprocessors can be used as controllers in many instruments. They are also used in medical instruments to measure blood pressure and temperature. Communication: In the ...