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It followed by identification of electron in 1897 and then invention of the vacuum tube. This course introduces us to the fundamentals of electronics and is an excellent course. I would advocate EC college students to undergo this course since it will assist them lots. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small electrical alerts, inaugurated the sphere of electronics and the electron age. Additional practical-oriented electronics textbooks