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The purpose of the Model is to show the basic logic gate with diodes and LEDs. OR gate consists of one or more inputs, but with only a single output. Output of an OR gate is true (or 1) if at least one of the inputs. This is a complete working model supported by rough study material to make a suitable projects report by the student. It is using sun board base, Paper, Electronic-Electrical Components, Mechanical & Scientific goods as per the requirement of a particular model.