LOGIC GATES | video lecture in HINDI | Digital Electronics

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In this Physics lecture in hindi for class 12 and electronics / computer engineering students we explained the working of various logic gates like AND, OR, NOT, NAND, NOR, XOR and XNOR gate and also about there truth tables. Logic gates are the digital circuits operating on electronic pulse input and output. In digital electronics absence of signal is considered as zero and presence of signal is considered as one. When we tabulate the input and output values in table, it is known as Truth Table.

AND gate : Output is 1 when there is 1 in any of the inputs.
OR gate : Output is 1 when there is 1 in any of the inputs
NOT gate : Reverses the signal. 1 becomes 0 and 0 becomes 1.
NOR gate : It is reverse of OR gate.
NAND gate : It is reverse of AND gate.
XOR gate : Output is 1, when only of the inputs is 1.
XNOR gate : It is reverse of XOR gate.