Logic gates are fundamental building blocks of digital circuits and systems in computer science and electronics. They perform basic logical operations on binary inputs to produce a single binary output.
Logic gates work with binary inputs and outputs, typically represented as 0 (low) or 1 (high). Therefore, they implement Boolean logic operations, allowing for complex logical computations.
Most logic gates have two or more inputs but only one output, and the output is determined solely by the current input combination, with no memory of previous states.
Basic types of logic gates:
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AND Gate: Outputs 1 only if all inputs are 1
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OR Gate: Outputs 1 if at least one input is 1
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NOT Gate (Inverter): Outputs the opposite of its single input
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NAND Gate: Combination of AND and NOT gates
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NOR Gate: Combination of OR and NOT gates
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XOR Gate: Outputs 1 if inputs are different
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XNOR Gate: Outputs 1 if inputs are the same
Logic gates are represented by specific symbols in circuits diagrams and can be combined to create more complex logical functions and circuits