Hi…. friends . I am again here with some discussion on Light Emitting Diodes (LEDs) So in this article we will discuss about function and uses of LED . LED are most basic electronic component to be used in almost all the electronic circuit in different forms. If you are going to start with electronics you must have proper knowledge of using LEDs efficiently. INTRODUCTION ( FUNCTION AND CONNECTION) LEDs are unidirectional devices like diode and works only in forward bias condition and emits light when a power supply is connected across the terminal of LED. There are two terminal in simple LED ( some special LEDs contain more than two terminals).As shown in figure below these two terminal are termed as anode ( represented with a or +) and cathode (represented with k (not c) or -). These two terminals must be connected correct way round as a to positive and k to negative terminal of supply. You can determine ANODE and CATHODE by checking the LED as the larger lead is anode and shorter...