TRANSISTOR are the building block of an electronic device.it has three terminals base,collector,and emmiter these three terminals have the capacity to work in different voltage levels.it is used in our daily life like computers,cellphones and even cars.
Before transistor has been introduced engineers used vaccum tubes and electronic switches to complete a electronic device but these tubes were very large and occupied much space,for getting back from this hurdle transistor is introduced,it is fomed from the basic silicon chip.
TRANSISTOR was first introduced in bell telephone system instead of vacuum tubes to enhance its communication system
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